题目内容
The conventional view that the Mars’ atmosphere is very poor because the planet lacks a magnetic field.
| A.covers | B.holds | C.possesses | D.contains |
B
考查动词:A. covers涉及,B. holds持有,抓住C. possesses 拥有,D. contains含有,句意是:通常的看法认为火星的大气很差,因为这个行星缺乏磁场。选B。
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