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【单选题】
图示电路中电流i S 等于 。A.
1.5A
B.
-1.5A
C.
3A
D.
-3A
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举一反三
【单选题】男,55岁。30年吸烟史,支气管镜活检可见鳞状上皮和支气管腺体,此种病理变化属于( )
A.
支气管黏膜化生
B.
支气管黏膜肥大
C.
支气管黏膜萎缩
D.
支气管鳞状细胞癌
E.
支气管腺癌
【单选题】Contracts must be renewed one week _______ their expiration.
A.
on
B.
against
C.
the moment of
D.
before
【简答题】What's the most obvious reason for few momen in science according to Dr. Kistiakowsky?
【单选题】男，55岁，30年吸烟史。支气管镜活检可见鳞状上皮和支气管腺体，此种病理变化属于
A.
支气管黏膜化生
B.
支气管鳞状细胞癌
C.
支气管黏膜肥大
D.
支气管腺癌
E.
支气管黏膜萎缩
【单选题】— I was so sure that our experiment was going to succeed, but something went wrong at the last moment. — ______, but don't give it up. [ ]
A.
You don't mean that
B.
Find out the reason
C.
Never mind
D.
I'm sorry to hear that.
【单选题】The ______ they arrived at the hotel, couples were presented with a bunch of roses.
A.
moment
B.
time
C.
occasion
D.
chance
【单选题】_____ she heard the news that she won a scholarship, she was very excited.
A.
The moment
B.
At the moment
C.
For the moment
D.
A moment
【单选题】The classroom is big enough ______, but we’ll have to move if we have more students.
A.
for the moment
B.
on the moment
C.
in a moment
D.
for a moment
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