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【多选题】
数据库安全技术包括用户身份鉴别、()和数据加密等。A.
自主存取控制
B.
强制存取控制
C.
视图
D.
审计
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举一反三
【简答题】气体传感器是一种能够感知环境中气体成分和（ ）的敏感器件。
【单选题】The class ( )( )( ) over, we had a ( )( )( )discussion.
A.
been ... heat
B.
being ... heated
C.
is ... heating
D.
be ... heated
【简答题】I phoned my first teacher timeand again when I heard that he was ill, yet couldn’t . A. getthrough B. get along C. getover D. get hold of
【单选题】The children talked so loudly at dinner table that I had to struggle ____.
A.
to be heard
B.
to have heard
C.
hearing
D.
being heard
【简答题】I was sleeping soundly last night when I was awakened by someone’s groans（呻吟）.I listened , and heard it was from Sam，a student from Africa. I really wanted to go on sleeping, as I had insomnia（失眠）and ...
【单选题】Henry Durant put forward the idea because he
A.
had once fought in a war in Italy.
B.
had been wounded in a war.
C.
had assisted in treating the wounded.
D.
had seen the casualties and cruelties of war.
【单选题】The children talked so loudly at dinner table I had to struggle _________.
A.
to be heard
B.
to have heard
C.
hearing
D.
being heard
【单选题】听力原文：M：You didn't go to the lecture last night either, did you? W：No，I had a severe headache． Q：What do we learn from this conversation? (13)
A.
The man went to the lecture, but the woman didn't.
B.
The woman went to the lecture, but the man didn't.
C.
Neither of speakers went to the lecture.
D.
Both speakers went to the lecture.
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