Question

【题目】Hawking became worldfamous in ________.

A．his thirties in the 1970's

B．the thirties in this 1970

C．his thirties in 1970's

D．the thirties during the 1970

Answer 1

【答案】A

【解析】考查数词的用法。in one's thirties意为“在某人三十多岁”时，in/during the 1970's意为“在20世纪70年代”。故选A。