____ that saw the trade between the two countries reach its highest point.\u3000\u3000 A\uff0eDuring the 19

C \u672c\u9898\u6d4b\u8bd5\u5f3a\u8c03\u53e5\u578b\u3002\u57fa\u672c\u7ed3\u6784\uff1aIt is+\u5f3a\u8c03\u90e8\u5206+that+\u53e5\u5b50\u5176\u4ed6\u6210\u5206\u3002\u6839\u636e\u4e0a\u4e0b\u6587\uff0c\u672c\u53e5\u662f\u5f3a\u8c03\u53e5\u5b50\u7684\u4e3b\u8bed\u201cthe 1980\u2019s\u201d\uff0c\u6545\u7b54\u6848\u4e3aC\u3002

D

that saw the trade ...\u76f8\u5f53\u4e8e\u6c49\u8bed\u7684\u62df\u4eba\u624b\u6cd5
\u8fd9\u662f\u5f3a\u8c03\u53e5\uff0c \u88ab\u5f3a\u8c03\u7684 the 1990's \u662f\u539f\u53e5\u7684\u4e3b\u8bed

\u539f\u53e5\u4e3a\uff1a The 1990's saw the trade between the two countries reach its highest point.


\u3010\u5e0c\u671b\u5e2e\u52a9\u5230\u4f60\uff0c\u82e5\u6709\u7591\u95ee\uff0c\u53ef\u4ee5\u8ffd\u95ee~~~
\u795d\u4f60\u5b66\u4e60\u8fdb\u6b65\uff0c\u66f4\u4e0a\u4e00\u5c42\u697c\uff01(*^__^*)\u3011

A语法不对 。这句是明显的强调句句型。
It is + 被强调部分+that+剩余部分
被强调的是时间状语：in the 1960's。所以选B。

因为that后面引导的是状语从句，横线上要填必须是另一个完整的句子结构即要有谓语的存在，A 只是个介词短语。

此题考查强调句 固定句型为It's+被强调部分+that……
如果选A 那么句子中that 就多余了