题目内容
He was taken away by the police. He ________ for a robber.
A．must be mistaken B．must have been mistaken
C．must mistake D．must have mistaken
B 由句中was taken的提示可知是对过去事情的推测。因此，用must＋ have done结构。句意：他被警察带走了，一定被误认为是强盗了。
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A terrifying example of the sea’s power saw 125,000 people die in 12 different countries last week. The destruction was caused when a very big 16 sent tsunamis (海啸) smashing into Indian Ocean coastlines.
Communities in
The earthquake 20 9.0 on he Richter scale and occurred 21 the coast of
Scientists said the quake was as 23 an a million of the atom bombs that were 24 on
Because such waves 26 happen in he Indian Ocean, there is no system in place to 27 coastal communities they are about to be hit.
Tsunami is Japanese for “harbor wave”. They are usually caused by a sudden 28 or fall of he part of the Earth crust (地壳) under the ocean. Tsunamis often happen in oceans and they are most 29 in the Pacific. Normally a tsunami includes a series of waves.
Tsunamis can be very long- as much as 100 kilometers-and be as far as one hour apart. They are able to 30 entire oceans without losing much energy. One of the most striking 31 about tsunamis is that an earthquake on one side of the Pacific Ocean can cause giant waves and destruction on the other side.
When the ocean is deep, tsunamis can travel unnoticed 32 speeds of up to 800 kilometers per hour. They can cross the entire ocean in a day or less. The wave may only be a few meters high in the ocean 33 when it is near the shore and reaches shallow water, the wave builds up very quickly in 34. Witnesses in some areas of
“Tsunamis travel
16. A. storm | B. hurricane | C. earthquake | D. wave |
17. A. cut | B. shook | C. included | D. destroyed |
18. A. survive | B. remain | C. exist | D. achieve |
19. A. in a way | B. in the way | C. on the way | D. by the way |
20. A. equaled | B. measured | C. matched | D. valued |
21. A. on | B. in | C. at | D. off |
22. A. referred | B. used | C. recorded | D. marked |
23. A. huge | B. much | C. powerful | D. many |
24. A. fallen | B. dropped | C. fired | D. burst |
25. A. if | B. though | C. as | D. unless |
26. A. never | B. rarely | C. often | D. always |
27. A. warm | B. prevent | C. protect | D. remind |
28. A. raise | B. increase | C. rise | D. grow |
29. A common | B. usual | C. extraordinary | D. natural |
30. A. spread | B. extend | C. cross | D. reach |
31. A. news | B. facts | C. stories | D. accidents |
32. A. in | B. on | C. at | D. for |
33. A. but | B. and | C. however | D. or |
34. A. width | B. size | C. height | D. length |
35. A. toward | B. forward | C. outward | D. inward |