沪、深证券交易所现行的集合竞价时间为每个交易日上午()。
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Peter wishes that he _____law instead of literature when he was in college.
A. could study B. studied C. had studied D. would study
证券交易具有()特征,决定了广大投资者只能委托证券经纪商代理买卖来完成交易过程。
The young man promised to his parents, “I would never_________ again.”
A. let you down B. let you Out C. let you in D. let you by