1, the ancients said well: "An inch of time is worth an inch of gold, and an inch of gold cannot buy an inch of time." So we should cherish the present time and study hard.

During the celebration of this cultural festival, many foreign tourists came here, and China volunteers warmly received them. As the saying goes, "it's a pleasure to have friends from afar."

3. "Young people don't work hard, and the boss is sad." While you are still young, you must study hard. Time is gone forever.

Extended data:

The role of reference:

1, the reference description is at the beginning of the article, which also leads to the description object.

2. Cite specific cases; (The function is the same as the example)

Give practical examples to explain things, so that the things to be explained can be specific and the readers can understand them.

3. Cite specific data; (Functions in the same column)

In order to make the things to be explained concrete, you can also use the method of column data to make readers understand.

4. Quote famous sayings, maxims and proverbs; The function is to make the explanation more convincing.

5, citing myths and legends, news reports, riddles, anecdotes, etc. The function is to enhance the interest of the explanation.