Although the causes of cancer_____, we do not yet have any practical way to prevent it.
| A．are being uncovered | B．have been uncovering | C．are uncovering | D．have uncovered |
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25.—Why is Mr. Li so happy this morning?
—Because he was honoured with a(n)______ for excellence in teaching.
| A．present | B．gift | C．award | D．Reward |
23. The day ______ she spent with us was never to be forgotten.
| A．when | B．on which | C．that | D．in which |
22. Let’s ______my scientific knowledge and your business skills and start a company.
| A．connect | B．relate | C．combine | D．Put |
第二部分：英语知识运用（共两节，满分45分）
单项填空（共15小题，每小题1分，满分15分）
21. —Would you like to watch the basketball m
atch with me this evening?
—______. I like basketball very much.
| A．I’d love to | B．Not really | C．I wouldn’t go | D．Thank you all the same |
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