A, fill in the blanks (every 65438 points 20 points +0 points)

1. The seesaw that children in amusement parks like to play belongs to the lever in simple machinery.

2. There are three important positions on the lever: the position that supports the lever and enables it to rotate around it.

It is called fulcrum, the position where the lever exerts force is called force point, and the position where the lever overcomes resistance is called resistance point.

3. Exerting force on the wheel of the axle can save labor. The bigger the wheel, the more labor will be saved.

4. A pulley that rotates in one position without moving is called a crown block.

5. The basic shapes of building frame structures are quadrangles and triangles.

6. The lever principle is applied to the brakes of bicycles, which plays a labor-saving and convenient role.

7. There are many forms of energy, including electric energy, light energy and sound energy. Energy is also stored in fuel and food.

8. Most of the energy we use now comes from the sun.

9. Animals with spines are called vertebrates, and animals without spines are called invertebrates.

10, plants are divided into two categories according to whether they have flowers or not: flowering plants and non-flowering plants.

1 1, the wider the paper, the better the bending performance, and the thicker the paper, the better the bending performance.

Second, multiple-choice questions (30 points, 2 points for each small question)

1. Among the following tools, (c) is very laborious to use.

A pliers b scissors c tweezers

2. Among the following simple machines, (b) cannot save labor.

A crown block b moving pulley c axis

3. People's feet can bear heavy weight, mainly because of (a).

A foot bones form an arch structure, B foot bones are numerous, and C foot muscles are well developed.

4. "Small weight" refers to principle (a).

Application of a lever to balance b inclined plane and c axis

5. Which of the following factors will not affect the magnetic force of electromagnet? (C) 10 .

A, increase the number of batteries b, increase the number of coil turns c, and change the north and south poles of the electromagnet.

6. The energy possessed by a moving object is called (A).

A, mechanical energy b, chemical energy c, biological energy

7. Which of the following levers is different from the other two (b)?

A, seesaw b, pulley c for lifting heavy objects, bottle opener for lifting bottle caps.

8. Which of the following frames is not easy to deform (C)?

A, square b, rectangle c, triangle

9. The lever with the force point close to the fulcrum and the resistance point far from the fulcrum is (B).

A, labor-saving lever B, labor-saving lever C, neither laborious nor laborious

10, for the same species living in a colder environment, the individual is (a).

A, the bigger B, the smaller C, the same.

1 1, which pulley is the most labor-saving for lifting the same weight (c).

A crown block b moving pulley c pulley block

12, the screw with the same thickness, the denser the thread, the more (b) is screwed.

A, effort B, effort C, neither effort nor effort.

13, coal is formed by deep buried B in the process of deposition.

A, the remains of ancient lower organisms B, ancient plants C, ancient animals

14, insects have two feet.

A, three B's, four C's and eight.

15, cactus leaves grow into thorns, which is B.

A prevents animals from eating b reduces water evaporation c absorbs nutrients.

Third, true or false questions (each small question 10 points).

1 A screwdriver is easier to take out screws than a hammer. ( √ )

The crown block can change the direction of force and save labor. ( × )

Panshan Highway adopts the inclined plane principle. ( √ )

A sphere can be regarded as an arch in all directions, which makes it stronger than any other shape. ( √ )

Increasing the thickness of materials can improve the bending resistance of materials. ( √ )

Zhao Zhouqiao is a typical cable-stayed bridge. ( × )

Solar energy is inexhaustible. ( √ )

Coal, oil and natural gas are non-renewable resources. ( √ )

10 using a lever can save labor. ( × )

Four connection problems. (10)

1, chopsticks are inclined.

2. Tap water faucet

3.Axe B labor-saving rod

4. Screw

5, hammer C laborious lever

6. Crane

7. Panshan Highway

8, tweezers D pulley

9, handlebar

10, pedal e axis

Five experimental questions: research scheme for testing the relationship between electromagnet magnetic force and current intensity (10)

Question studied: Is there a relationship between the magnetic force of electromagnet and the current intensity?

Our hypothesis: strong current, strong magnetic force; Small current, small magnetic force.

Test factor (condition change): increase the number of batteries.

How to change this situation 1, use 1 battery 2 for the first time, use 2 batteries 3 for the second time and use 3 batteries for the third time?

What conditions are inconvenient to keep in the experiment: the size of the iron core and the number of coils wound on the iron core.

Our conclusion: increasing the current intensity can increase the magnetic force of electromagnet.

Six short answers (10)

1 When is the lever labor-saving? Under what circumstances is leverage laborious? Under what circumstances is the lever effortless?

When the distance from the force point to the fulcrum is greater than the distance from the resistance point to the fulcrum, the lever saves effort;

When the distance from the force point to the fulcrum is less than the distance from the resistance point to the fulcrum, the lever is laborious;

When the distance from the force point to the fulcrum is equal to the distance from the resistance point to the fulcrum, the lever is neither labor-saving nor laborious.

2 What characteristics make which frame towers difficult to fall down?

The upper part is small and the lower part is big, the upper part is light and the lower part is heavy, and the triangular frame structure is fully utilized, so the resistance is small.

How can the paper arch bear more weight?

Increase the thickness of the paper, increase the width of the paper, and press it on the arch foot to reduce the width of the arch.

Chinese

First, the basic knowledge.

1. Read syllables and find friends with words.

Intoxicated, dignified, elegy, cordial, nourishing, burly and sincerely encourage the cliff.

Analysis: The focus of this question is the writing of individual words. Such as: "drunk" and "drunk"; The "coagulation" of "dignified"; "pull" of "elegiac couplet"; The "gift" of "gift"; "Swallow dates" and "dates"; "nurturing" and "nurturing"; "burly" and "massive"; "sincerity" and "loyalty"; The word "encourage"; "Hanging" of "Cliff"

2. Read, add some words to read, and draw "_" under the correct syllable.

Engrave (juān juàn), row (mó m), boat (biān piān)

Hinder (náo ráo) plastics (su ò s ò) frustration (Cu ò Cu ò) fate (xiāo xuē).

Analysis: If you want to finish this problem correctly, you should always pay attention to the pronunciation of some confusing words. For words that are not often used, we should strengthen our memory. In this way, when you encounter this type of problem, you can choose the right one.

Please add radicals before the word "Xiao" to form a new word in the blank.

A steep cliff, a victorious (disappearing) girl.

(Sharpen) Good Pencil Fill (Nitrate) Smoke (Sell) Goods

(Xiao) Shou Yuan Festival (Night Festival)

Analysis: This question is about the investigation of distinguishing homophones from variant characters. Accurately distinguishing homonyms from variant forms is one of the main ways to overcome "other words", while distinguishing homonyms from variant forms mainly depends on the meaning and meaning. Understanding the meaning of Chinese characters is helpful for us to master the environment and scope of Chinese characters.

4. Fill in the blanks as required.

Search for the word "Xiang" by word order method. First, search for word order (x), then search for syllable (xiànɡ). According to the radical search method, check (self) first, and then check (6) painting. Can form a word (street).

Analysis: This question not only examines students' ability to look up dictionaries, but also examines Chinese pinyin, Chinese character structure, radicals, word formation and other knowledge. Therefore, we should master all aspects of knowledge comprehensively and solidly, and at the same time pay attention to its different characteristics and requirements when applying knowledge.

In the dictionary, the word "man" means: ① The water is too full and flows out; (2) Everywhere; 3 bold and unrestrained, casual. (1) I casually kicked the saddle downstairs. This word means (3)

Look, the water in the basin is overflowing. This word means (1)

The rest of the meaning can be combined into (all over the mountains)

Analysis: This topic is mainly about the detection of polysemous words. To complete this problem, we must first understand the reasons and situations of polysemy, and then understand the different meanings of words according to the provided words or language environment. For example, the word "person" in this question has three meanings, two provide different contexts, and one composes music for it, which is actually to let students not only understand but also use it. We can first understand the meaning of two contexts, then fill in the semantic items that meet the meaning of the topic for analysis, and then use the remaining semantic items to form words and put them in the corresponding contexts, so that we can find the correct answer more accurately.

5. Idiom contest.

Wind (rain) is the same as (boat) (hanging) cliff (steep) wall (strange) (wonderful) (love) can (pro) (restrain) Yangton (frustration) (Germany) high (hope) heavy.

(Sleeping) Don't (Ann) Sit Zhang (Guan) Li (Dai)

Analysis: Idioms are one of the essence contents. To solve this kind of problem, we should complete the words according to the usual accumulation and try not to write typos.

Second, accumulate and use.

1, can you fill in the idioms you have learned? (65438+ 0 point per grid)

People often use high mountains and flowing water as a metaphor to describe that bosom friends are hard to find or music is exquisite, and praise Leonardo da Vinci's Mona Lisa with both refined and popular tastes. When we are faced with a good article, we can say that it is brilliant. (The last two empty answers are not unique)

Analysis: This kind of questions is an examination of idiom understanding, and it is also an examination of the content of the text that students have learned this semester. So it is more difficult than directly understanding idioms. Therefore, when you finish, you must carefully understand the context and meaning provided, and combine your usual accumulation and idiom usage habits to answer the questions one by one.

2. Complement China's ancient famous sentences. (65438+ 0 point per grid)

(1) Mr. Lu Xun once said, "frown at a thousand fingers and bow your head as a willing ox."

(2) It is not that chrysanthemum is preferred among flowers, but that this flower is even more flowerless.

(3) light commitment, but don't believe it. This famous saying tells us that people who make promises to others easily must rarely keep their promises. (This answer is not unique, as long as the meaning is right.)

(4) But this square inch of land should be saved for future generations.

(5) The desert sand is like snow, and the Yanshan moon is like a hook.

Analysis: Supplementing famous ancient Chinese sentences is a common problem that students usually accumulate. Its difficulty lies in the need to read and remember a lot of ancient poems and famous sayings. To solve this problem, we can do it well as long as we accumulate it carefully in our study.

3. Write sentences as required. (2 points per sentence)

(1) moistened the soil and went home. I still miss the leap soil deeply. (Make sentences with appropriate related words)

Although Runtu went home, I still miss him deeply.

Analysis: The relationship between these two sentences should be a turning point. Therefore, the related word "... although ... but" should be used to connect them.

(2) The old man stopped me and said, "Am I bothering you?" (changed to indirect speech)

The old man stopped me and said, is he bothering me?

Analysis: This is a test question to test the conversion between quoted sentences and paraphrased sentences. To answer these questions correctly, we must understand the characteristics of both sides. Pay attention to the following points when filling in: ① change the pronoun in the sentence, such as "I" to "he (she)" and "you" to the specific person in the sentence; ② changing punctuation marks; (3) According to the content of the sentence, some people want to change individual words in the sentence, but they can't change the original meaning of the sentence.

(3) everything in this mountain, which is not my friend? (changed to declarative sentence)

Everything on this mountain is my friend.

Analysis: To change a rhetorical question into a declarative sentence or a declarative sentence into a rhetorical question, you should delete, change words and punctuate it in the corresponding place. This question requires the rhetorical question to be changed into a declarative sentence, that is, the word "which" indicating the question is removed and changed to "every one", the negative word "not" in the original sentence is changed to "all yes", and the question mark at the end of the sentence is changed to a period.

(4) The moon has risen. (Extended sentence)

The moon rises slowly.

Analysis: Sentence expansion can use local expansion grammar to expand sentences. Divide the sentence into two parts-first expand the front part and then expand the back part. What kind of moon has risen?

(5) Small fish swim around in the water. (rewritten into anthropomorphic sentences)

Small fish swim and play happily in the water.

Analysis: personification is to write things into adults with the help of imagination, to write things that can speak, to have thoughts and feelings like people, or to describe them in human words. In this question, you can fill in the words "swimming" and "playing" and write the fish as a person.

Third, oral communication.

Analysis: The purpose of this question is to examine students' expressive ability, so that students can enhance their love for the motherland through comprehensive study this semester. According to the materials given in the question, express what you want to say in appropriate language. As long as the content is healthy and uplifting, there is a certain passion. (3 points)

Read the passage and answer the questions.

Analysis: This is a reading question about writing a landscape article. When reading landscape articles, we should pay attention to the following points: ① pay attention to the expressive effect of the author's words and sentences; (2) Pay attention to analyzing the expression order of articles; ③ Understand the author's thoughts and feelings. At the same time, when reading landscape articles, we should accumulate language and methods.

1, add some words below. (5 points)

Come to an abrupt end (jiá) with fruitful results (shuò) and (hè) with steps (lǐ) to carve (zhuó).

2. Change the sentences with "_ _" into declarative sentences. (2 points)

In this refreshing season, there is no room for doubt and affectation.

Analysis: Change rhetorical questions into declarative sentences, and delete and change words and punctuation marks in corresponding places. This question is to change the rhetorical question into a declarative sentence, that is, to remove the word "how can" that indicates doubt, to change the word "can't hold" in the original sentence into "can't hold", to remove the word "what" at the end of the sentence, and finally to change the question mark at the end of the sentence into a period.

In the author's eyes, spring is characterized by lingering, summer by fanaticism, winter by indifference, and autumn by freshness, enthusiasm and sincerity. (3 points)

In the article, the author compares autumn to a fine horse, a general and a meteor. (3 points)

5. "This is the noble and unique charm of autumn." What does "this" mean in the sentence? (2 points)

"This" refers to the freshness, enthusiasm and sincerity of autumn.

6. (omitted) Students can answer questions according to their own understanding, as long as they are reasonable.

7. (omitted) There is no fixed answer, just write a few words about the characteristics of autumn in a parallel way.

Verb (short for verb) Homework:

Requirements: 1, accurate words and fluent sentences, (5 points)

3 (including 3) typos will be deducted 1 point, 2 points will be deducted for more than 3 typos, and 5 points will be deducted at most;

One point will be deducted for an unreasonable sentence, and five points will be deducted at most.

2, can grasp the description of the character's appearance, movements, language, expression, etc. To describe the personality characteristics of the characters. (15)

3. The center is prominent and the content should be innovative. (10)

This is all I can give you. ...

But let's take the exam on our own strength. Let's work together! I'm in grade six, too!

Come on!