(　　)1. Be careful with the bottles on the table. The kids may __________.
A. knock over them B. knock them over
C. knock them off D. knock off them

(　　)2. Our Chinese teacher was so satisfied __________ Jim’s article that he read it to us in class.
A. to B. about C. on D. with

(　　)3. The price of this computer is a little __________. I can’t afford it.
A. high B. low C. expensive D. cheap

(　　)4. There is going to __________ a robot show __________ Children’s Day.
A. have; on B. have; in C. be; on D. be; in

(　　)5. I __________ you to be here from 9 to 11 o’clock, at the very least.
A. let B. expect C. keep D. make

(　　)6. —I didn’t go camping with my friends yesterday. —__________.
A. It’s a pity B. Thank you C. You’re welcome D. Bad luck

(　　)7. People in the UK say “garden” while people in the USA say “__________”.
A. cookie B. yard C. fall D. park

(　　)8. Mr. Jiang bought a robot __________ have more free time.
A. so that B. as a result C. because of D. in order to

(　　)9. —Will the robot __________ any bad changes to your life? —Maybe it will.
A. bring B. take C. carry D. catch

(　　)10. —How often do you think your robot should be checked? —__________.
A. Very long B. One year
C. In two years D. Every two months

(　　)11. The woman carefully __________ the eggs on the table and went into the kitchen.
A. lied B. lay C. laid D. lain

(　　)12. The teacher found that Sam __________ and often gave him some different homework to do.
A. was clever boy B. was a clever boy
C. a clever boy D. clever

(　　)13. The little girl didn’t know __________.
A. what to do it B. what could she do
C. how to do it D. how to do

(　　)14. We must do everything we can __________ waste water from running into rivers.
A. prevent B. prevented C. preventing D. to prevent

(　　)15. My hair needs __________. I want to have it __________ this afternoon.
A. to cut; cutting B. cutting; to cut
C. cut; cutting D. cutting; cut

二、完形填空
“When it comes to the Earth, there’s no time to waste,” says the Earth Day Network. And that is right. Protecting our environment is very important, and World Earth Day was created in 1970 to make people pay __________ attention to the protection of our environment. On 22 April, people around the world celebrate the Earth Day.
Every year there is a special __________. For example, the year 2016 is “Trees for the Earth”, so the Earth Day was all about planting trees. Their goal was to plant 7.8 billion trees __________ the next five years.
That’s a big goal, and you might wonder __________ trees are so important. Well, for one, they can help stop climate change. Carbon dioxide (二氧化碳) is a chemical in our atmosphere, but __________ make too much of it. Each person makes about 2.3 tons a year, which is bad for the environment.
Well, guess what! Trees __________ carbon dioxide and improve the air quality. Planting new trees is important because people cut down __________ trees. In 2015, there were three trillion (万亿) trees in the __________, about 139 billion in China. But according to Time, the world’s total number has been __________ cut in half since human civilization (文明) began. That’s to say, 15 billion trees are cut down every year.
So we need to plant more to replenish (补充) the ones we’ve lost. One tree can take in 48 pounds (21.8 kg) of carbon dioxide per year. And it’s still one of the cheapest and __________ ways to get rid of too much carbon dioxide.
(　　)16. A. some B. no C. more D. less
(　　)17. A. name B. topic C. song D. sign
(　　)18. A. for B. since C. by D. in
(　　)19. A. that B. why C. whether D. how
(　　)20. A. humans B. animals C. ghosts D. plants
(　　)21. A. try out B. put up C. take in D. show off
(　　)22. A. countless B. hopeless C. useless D. endless
(　　)23. A. wild B. world C. forest D. space
(　　)24. A. hardly B. never C. really D. almost
(　　)25. A. most B. best C. fewest D. worst