While flying,a bat makes a sound which hits things and comes back to its ears. I
题型：同步题难度：来源：
| While flying,a bat makes a sound which hits things and comes back to its ears. In this way it"s able to know the things are and avoid bumping into them. |
| [ ] |
A. how
B. where
C. what
D. which |
答案
| B |
举一反三
| _____Mary is busy, she always helps others. |
| [ ] |
A. Although
B. Since
C. Whether
D. Unless |
| He asks me to use the computer. |
| [ ] |
A.why
B.if
C.whether
D.what |
| I don"t know_________it will rain or not tomorrow. |
| [ ] |
A. how
B. whether
C.when
D. that |
| Peter likes readlig a newspaper _____he is having breakfast. |
| [ ] |
A. until
B. while
C. because
D. though |
―What can I do for you, sir?
—I really like this shirt. I wonder _________ you have a larger one. |
| [ ] |
A. if
B. what
C. how much
D. that |
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