【问】 dolls as a hobby increasingly popular during the fifty years.(TOEFL，88.1)

上道试题明明写着during the past fifty years(在过去的50年里)，为什么还要求谓语动词使用现在完成时(has become)呢?

【答】 关于这个问题的详细解答，见before，in the past。

请做下面的英语试题：

1. In____，the advent of the telephone，radio，and television has made rapid long-dis-tance communication possible.

A. one hundred years later B. one hundred years ago

C. the one hundred years since D. the last one hundred years(TOEFL，86. 12)

2. Industrial management is the aspect of business management that was most prominentin the United States for the past eighty years. (TOEFL，87. 5)