语法与词汇
20.
Having been attacked by terrorists,______.
A、
doctors came to their rescue
B、
the tall building collapsed
C、
an emergency measure was taken
D、
warnings were given to tourists
【正确答案】
B
【答案解析】
Having been attacked前面没有自己的逻辑主语，说明这个动作的主语就是句子的大主语。目测所有的四个选项，只有the tall building可以“having been attacked(已经被袭击)”
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