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【单选题】When drinking______ someone’s health，you raise your glasses，but the glasses should not touch．
A.
to
B.
for
C.
by
D.
in
【简答题】阅读理解。 Helen's eyes are not very good, so she wears glasses. But she doesn't wear glasses when she is with her friend, Jim. When Jim comes to her house to take her out, she will take her glasses off, a...
【单选题】It was not ______she took off the glasses ________ I realized she was a famous film star.
A.
when; that
B.
until; that
C.
until; when
D.
when; until
【单选题】She was wearing glasses when we met her.
A.
She put the glasses on after we met.
B.
She had the glasses on before we met.
【单选题】反应 A2 + B2 → 2AB 的速率方程为 v = k c (A 2 ) c (B 2 ) , 此反应 .. ( )
A.
一定是基元反应；
B.
一定是复杂反应
C.
无法肯定是否为基元反应；
D.
对A来说是一个二级反应。
【单选题】-- When did he leave the classroom? --- He left _____ you turned back to write on the blackboard.
A.
the minute
B.
the time
C.
until
D.
before
【简答题】Helen’s eyes are not very good, so she wears glasses. But she doesn’t wear glasses when she is with her friend, Jim. When Jim comes to her house to take her out, she will take her glasses off, and whe...
【单选题】反应 A2 + B2 → 2AB 的速率方程为 v = k c (A2) c (B2) , 此反应 .. ( ) (A) 一定是元反应 ; (B) 一定是复合反应 ; (C) 无法肯定是否为元反应; (D) 对 A 来说是一个二级反应。
A.
一定是元反应；
B.
一定是复合反应
C.
无法肯定是否为元反应；
D.
对A来说是一个二级反应。
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