Look at the map and it shows: (1) The cruise ship travels around the world from Shanghai, passing through the Pacific Ocean → Indian Ocean → Atlantic Ocean → Pacific Ocean in turn;

(2) A is Suez Canal and B is Panama Canal;

(3) The formation of the Red Sea is due to the tension between the African plate and the Indian Ocean plate; The future development trend of the Red Sea is the gradual expansion of the area;

(4) British and French residents often go to the sunny Mediterranean coast for holidays in summer, because there are many rainy days and low temperatures in Britain and France. In the Mediterranean region, vast oceans are interconnected in summer. Traditionally, people divide the ocean into four parts, named Pacific Ocean, Indian Ocean, Atlantic Ocean and Arctic Ocean. There is little precipitation and plenty of sunshine.

(5) The reason for the rapid population growth in the United States is immigration or population migration;

After nearly three months of sailing, Mr. Wang returned to Shanghai and found that the daytime in Shanghai was longer than the time he left. The reason is that he left on March 22, and left for nearly three months, that is, June 22, which is almost the summer solstice. In China, the days are long and the nights are short.

So the answer is:

(1) Pacific Ocean → Indian Ocean → Atlantic Ocean → Pacific Ocean;

(2) Suez Canal; Panama canal;

(3) The African plate and the Indian Ocean plate were formed by stretching; The future development trend of the Red Sea is the gradual expansion of the area;

(4) Britain, France and other places are rainy and the temperature is low in summer, while the Mediterranean region has less precipitation and plenty of sunshine in summer.

(5) Migration or population migration;

(6) long.