Space vegetables are grown from seeds(种子)that have been taken to space and brought back to the earth. The seeds are affected by the radiation(辐射)and low gravity in space. When they are brought back to the earth, these seeds produce vegetables that are bigger and healthier than normal vegetables. However, some people worry about eating space vegetables. They think that space vegetables might not be good for us and could make us get sick because of the radiation in space. However, people should not be frightened because space vegetables are very healthy.

Here are some facts that you should know about space vegetables.

Space vegetables are grown from seeds that are carefully chosen. When seeds are brought back from space, they are tested to make sure that they will be safe to eat.

Space vegetables are better for you than normal vegetables. For example, space tomatoes stay fresh for twenty days, which is one week longer than normal tomatoes.

After genetically modified(转基因)food appeared in the market, people worried that they were eating unknown things. For example, if nut genes(坚果基因)are put inside potatoes, people allergic to nuts might get sick from eating these potatoes because they do not know they are also eating nuts. Unlike genetically modified food, space vegetables have not been genetically changed. This means that no new genes are put into the vegetables. Therefore, there are no dangers of eating something unknown.

1.Genetically modified food is different from space vegetables because it .

A. is grown in space

B. has nothing unknown

C. has been genetically changed

D. has no new genes

2.According to the passage, normal tomatoes can stay fresh for about days.

A. seven B. thirteen

C. twenty D. twenty-seven

3.The underlined word "allergic" means“ ”in Chinese.

A.过敏 B.种植

C.发现 D.出售

4.The writer wants to tell us that .

A. space vegetables are grown in space

B. everybody worries about eating space vegetables

C. space vegetables are safe and good for people to eat

D. space vegetables may bring illness to us because of the radiation in space

完形填空,阅读短文, 从每题所给选项中选出可以填入空白处的最佳选项。

When I was 8 years old, I once decided to run away from home. With my bag and some sandwiches, I started for the front door and said to Mom, “I’m _________ .”

“If you want to _________ , that’s all right,” she said. “But you came into this home without anything and you can leave the same way.” I _________ my bag and sandwiches on the floor heavily and started for the door again.

“Wait a _________ ,” Mom said. “I want your _________ back. You didn’t wear anything when you _________ .” This really angered me. I took my clothes off—shoes, socks, underwear and all—and _________ , “Can I go now?” “Yes,” Mom answered, “but when you close that door, don’t hope to come back!”

I was so _________ that I slammed (砰地关上) the door and stepped out of it. _________ I found that I was outside with _________ on. Then I noticed that two neighbor girls were walking to my house. I ran to _________ behind a big tree in our yard at once. After a while, I was _________ that the girls went away. I rushed to the front door and knocked on it loudly.

“Who’s there?” I heard.

“It’s Billy! Let me in!”

The voice behind the _________ answered, “Billy doesn’t live here any more. He ran away from home.” Glancing(瞥) behind me to see if anyone else was coming. I begged(乞求), “Aw, come on, Mom! I’m still your son. Let me _________ !”

The door opened and Mom’s _________ face appeared(出现). “Did you change your decision about running away?” she asked.

“What’s for supper?” I answered.

1.A. leaving B. playing C. shopping D. coming

2.A. find out B. go by C. move around D. run away

3.A. cut B. hit C. threw D. hurt

4.A. day B. minute C. week D. month

5.A. bags B. clothes C. sandwiches D. shoes

6.A. left B. went C. came D. ran

7.A. said B. told C. laughed D. shouted

8.A. angry B. sorry C. interested D. excited

9.A. Certainly B. Quietly C. Suddenly D. Wonderfully

10.A. something B. anything C. everything D. nothing

11.A. play B. hide C. rest D. walk

12.A. sure B. amazing C. surprised D. lucky

13.A. house B. tree C. door D. flat

14.A. in B. out C. off D. down

15.A. surprising B. interesting C. exciting D. smiling

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