13. 将A连接到B14. 漂浮进太空

9.以药片的形式   10.与....相比

11. 以光的速度12. 由于人口的快速增长

5. 到2100年时6. 变得越来越拥挤

1.火星上的生活2. 睡袋

3. 干粮4. 需要穿特殊的靴子

7.随着技术的发展8. 在某些方面

Serena was the oldest child in the family,and her housework was to mow (割草) their yard. Mrs Martin,their elderly neighbour,was not 1 to take care of her yard,so Serena’s dad promised 2 that Serena would do this job.

“Why didn’t you ask me first?” Serena asked 3.

“Did you ask me first when you got me to be in the school festival last autumn?” asked her father.

“No,I didn’t ask you first,4 you’re always ready to help others. ”

“I try when I can”’ Dad answered. “Serena,we have known Mrs Martin for a very long time. She has always 5 our family. Now we should do something for her in return. What’s more,the 6 you get from helping others makes you wonder who is really helping whom. ”

“I don't know,Dad ,” said Serena. “I only feel 7 after mowing our yard. ”

“I know it’s hard work for you ,” said Dad. “Just wait and see. ”

After 8 at 7:30 a. m.，Serena made her way to Mrs Martin’s yard. She was 9 her job and soon Mrs Martin’s yard looked much tidier. Mrs Martin 10 with a big glass of orange juice and 11 it to her. Serena stopped her work and enjoyed the 12 ,while Mrs Martin was talking to her about all of the flowers in her yard. Seeing the joy (喜悦) in Mrs Martin’s eyes,Serena began to 13 how much the yard meant to Mrs Martin.

After 14 her drink,Serena returned to 15 in the yard,feeling warm in her heart and thinking about what her father said. Her dad was right. It was hard to tell who was helping whom!

() 1. A. glad   B. able   C. afraid   D. sorry

() 2. A. you   B. him   C. her   D. me

() 3. A. unhappily   B. gladly   C. warmly   D. patiently

() 4. A. and   B. or   C. so   D. but

() 5. A. helped   B. met   C. visited   D. troubled

() 6. A. reason   B. rule   C. feeling   D. excuse

() 7. A. excited   B. tired   C. sad   D. happy

() 8. A. breakfast   B. lunch   C. supper   D. dinner

() 9. A. surprised at   B. good at   C. angry about   D. worried about 

() 10. A. ran away   B. turned over   C. set off   D. came out

() 11. A. lent   B. threw   C. handed   D. sold

() 12. A. fruit   B. drink   C. meat   D. vegetables

() 13. A. plan   B. discuss   C. understand   D. choose

() 14. A. refusing   B. eating   C. preparing   D. finishing

() 15. A. work   B. study   C. relax   D. play

Welcome to the Mars shuttle!You will find a few u 1 things in the bag under your seat. You can use them during our trip and a 2 we arrive. Please take out your bag now and become f 3 with the items in it.

Your air tank will allow you to b 4 on Mars. See the harness on the tank? You use it to carry the tank on your back. The tube will carry air to your helmet. Inside the helmet,you can find a microphone. If you go out of your house on Mars,you can use it to talk to your family members i 5. And these

s 6 space boots will allow you to walk on Mars. You also have a pair of sunglasses for the trip. This will p 7 your eyes from the strong sunlight. Use your space timer instead o 8 a normal watch if you don't want to m 9 the shuttle back. In the bag,there are some vitamin pills for you if you feel s 10 during the trip. Lastly,remember to wear this temperature control suit. It will help your body adjust to the temperature on Mars.

1. 2.3. 4. 5.

6. 7.8. 9. 10.

5. 为了使孩子能有更多的时间放松，中国父母会做大多数的事情。

Chinese parents will do most things their children can have more time to relax.

4. 我们应当做些事情来制止人们乱扔垃圾。

We should do something throwing rubbish everywhere.

3. 没有水、空气和食物，人类不能生存！

without water,air or food!