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【单选题】
有电压的叙述不正确的是( )A.
感光效应的基本因素之一是管电压的选择
B.
kV是影响密度、信息量的重要因素
C.
kV升高,摄影条件的宽容度减少
D.
kV控制照片影像的对比度
E.
kV表示X线的穿透力
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【单选题】_______of the meeting, he wouldn’t have come for it. [ ]
A.
If he were not told
B.
Had he not been told
C.
Hadn’t he been told
D.
If he hadn’t told
【单选题】下列函数式中，是最小项之和形式的为______。
A.
Y 1 (A，B，C)=
B.
Y 2 (A，B，C)=
C.
Y 3 (A，B，C)=
D.
Y 4 (A，B，C，D)=
【单选题】The night watchman was fired because ______.
A.
he didn't devote himself to his work
B.
he told the owner the terrible dream
C.
he always told the truth
D.
he dreamed terrible dreams
【单选题】_________ many times, but he still couldn’t understand it.
A.
Having been told
B.
Though he had been told
C.
He was told
D.
Having told
【单选题】I think no news ________ good news, he will be back soon.
A.
is
B.
are
C.
was
D.
were
【单选题】--- Liu Tao has never read the book The Adventure of Tom Sawyer , _________ he? --- _________. He told me it's very interesting. He'd like to read it again.
A.
is; No, he isn't
B.
has; Yes, he has
C.
isn’t; Yes, he is
D.
hasn’t; No, he hasn't
【单选题】What did the man do?
A.
He didn't tell Alice the news.
B.
He told Alice the news.
C.
He asked the woman to tell Alice the news.
【单选题】After the international news, he went on to listen to the_____news.
A.
non-violent
B.
national
C.
native
D.
nationality
【简答题】he news is spreading around the airport is a heavy storm is coming. A. what/ B. that that C. /that D. that which
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