选择题:-We haven’t heard from Jane for a long time.( )-Wh

题目内容:
-We haven’t heard from Jane for a long time.( )
-What _____ to her? A A. was happening
B B. to happen
C C. has happened
D D. having happened

参考答案:

所谓证券投资是指在证券市场上短期内买进或卖出一种或多种证券以获取收益的一种经济行为。()(本题2.0

所谓证券投资是指在证券市场上短期内买进或卖出一种或多种证券以获取收益的一种经济行为。()(本题2.0分)A 正确B 错误

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