二、单项选择(每小题1分，共计15分)
21. –Try not to work yourself too hard. Take it easy.
–Thanks. _______.
A. No way B. So what? C. You too D. What for?
22. Why______ you do everything as if you have to win?
A. must B. can C. need D. shall
23. When we get closer to the moon, we shall feel its gravity pulling us, but it will not be ________ the earth’s.
A. as a strong pull as B. a pull as strong as C. as strong a pull as D. as strong pull as
24. _______ is even important is ______ as the earth cooled down, water began to appear on its surface.
A. That, that B. What, that C. What, what D. It, that
25. The fact is that I earned my passage by working as an unpaid hand, which _______ my appearance.
A. accounts for B. turns up C. dresses up D. cuts down
26. He could not have the murderer ________ away with killing those innocent people.
A. got B. to get C. get D. getting
27. ________ take the aeroplane all the way, they decided to fly to Vancouver and then take
A. Other than B. Rather than C. More than D. Or rather
28. I apologize if I _______ you, but I assure you that it was unintentional.
