2. 外语
  3. The barrier of language keeps many scientists in prolonged ignorance of work of immediate importance to them ______at present in

The barrier of language keeps many scientists in prolonged ignorance of work of immediate importance to them ______at present in

admin2009-02-10  41
问题 The barrier of language keeps many scientists in prolonged ignorance of work of immediate importance to them ______at present in many countries.
选项 A、doing
B、to be done
C、having done
D、being done
答案D
解析 此题考查非谓语动词的用法，根据题意的逻辑被动关系进行判断。
转载请注明原文地址:https://kaotiyun.com/show/wG6K777K
0

专业英语四级

相关试题推荐
随机试题
最新回复(0)