高一英语暑假作业练习题精炼2015

Algae(水藻) are very simple plants. They grow in fresh water or salty water. Seaweed is algae that grow in salty water. Seaweed is red or brown in color. The Japanese people use these plants from the sea in many ways. From it, they make a food called Kombu. Kombu is seaweed that has been dried, cooked and pressed together. Then it is dried again and cut into long p ieces. The Japanese eat a lot of Kombu and like it very much.

Japanese farmers often use seaweed as fertilizer. It makes their plants grow better. Many farmers also find seaweed makes a fine food for their animals.

From seaweed the Japanese also get iodine(碘), which they sell to other countries. Iodine is used in many ways all over the world. It is used in making medicine. It is added to the salt we use at the table. Scientists even use one form of iodine to “ seed clouds when they want rain to fall.

59. Kombu is a kind of ______ according to the text.

A. medicine B. food

C. plant D. fertilizer

60. In the last sentence of the text, “seed clouds means ______.

A. to make rain fall with human power

B. clouds spreading like seeds

C. the seeds like clouds

D. dropping seeds by clouds

61. The main idea of the story is that _______.

A. Kombu is made into medicine for farmers

B. The Japanese use seaweed in many ways

C. The Japanese eat seaweed when they want rain to fall

D. The Japanese eat a lot of Kombu