题目内容

【题目】_____ in 1943 _____ the harmful smog made its appearance in Los Angeles.

A. Only; that

B. It was; then

C. That it was; when

D. It was; that

【答案】D

【解析】考查强调句式。强调句式由“it is/was+被强调成分+that/who…”构成。本句强调的是时间。

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