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【单选题】
It is worth pointing out that the mishearing or misunderstanding of instructions in English, and the use of another language, in an international conversation, ______ two recent aircraft accidents.
A.
leading to
B.
to lead to
C.
led to
D.
have led to
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参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】You__________the parcel home．The shop would have delivered it if you had asked．
A.
needn’t have carried
B.
couldn’t have carried
C.
mustn’t have carried
D.
shouldn’t have carried
【单选题】水和无机盐可以进入活细胞，而有害物质不能进入活细胞，这主要是由于（）
A.
细胞膜有控制物质进出细胞的功能
B.
细胞壁有保护作用
C.
细胞核含有遗传物质
D.
细胞质具有流动性
【单选题】Maria has written two novels, both of _________ have been made into television series.
A.
them
B.
that
C.
what
D.
which