______ in 1943______ the harmful smog made its appearance in Los Angeles.A、Only.

游客2024-06-29  11

问题 ______ in 1943______ the harmful smog made its appearance in Los Angeles.

选项 A、Only... that
B、It was... then
C、That it was ... when
D、It was ... that

答案 D

解析 考点为句子结构。这应是强调句型,因为即使不填入It was... that,整个句子结构也是完整的。同样的例于还有:It’s you that are in danger. (是你有危险。)It’s when he’s out of work that he’s so violent. (只是在他失业的时候,他才这么狂暴。)
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