Hawking became world-famous in .his thirties in the 1970’s the thirties in his 1970his 30s

发布时间：2020-08-17 11:29:00

Hawking became world-famous in     .
his thirties in the 1970’s
the thirties in his 1970
his 30s in 1970’s
the thirties during the 1970

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解析： 选A。in one’s thirties 在某人三十多岁时，in/during the 1970s意思是“在二十世纪七十年代”。
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