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【单选题】
价键理论可以解释配合物的 ( )A.
颜色和 磁 性
B.
颜色和氧化还原性
C.
磁性和空间结构
D.
颜色和空间结构
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皮皮学刷刷变学霸
举一反三
【单选题】—Is Alice still performing? —I'm afraid not. She is said _______ the stage already as she has become a director.
A.
to have left
B.
to leave
C.
to have been left
D.
to be left
【单选题】I'm sorry to have you waiting so long for Marcia, and I'm afraid it'll be ten minutes _______ she comes back. [ ]
A.
before
B.
after
C.
until
【单选题】— Could I speak to Miss Smith, please? — ______. She's gone to the post office. [ ]
A.
I'm afraid not
B.
I think so
C.
Certainly you can
D.
I'm not sure
【单选题】—How anxious Ruby is! I wonder what on earth she ________. —I’m afraid nobody knows. She is always so strange.
A.
has expected
B.
will expect
C.
will have expected
D.
is expecting
【单选题】— Is Alice still performing？ — I’m afraid not. She is said the stage already as she has gone ab
A.
— Is Alice still performing？ — I’m afraid not. She is said ____ the stage already as she has gone abroad for further study. A．to leave
B.
to have left
C.
to be left
D.
to have been left
【单选题】— I'm afraid I have to leave a little earlier. My mother is ill in bed. — ____ I hope she will be all right soon. [ ]
A.
It's nothing.
B.
Nothing.
C.
I'm sorry to hear that.
D.
So she is.
【单选题】----- Why hasn’t she come to the party? ----- I’m afraid she can’t. She is _______ in preparing her graduation paper.
A.
covered
B.
filled
C.
occupied
D.
crowded
【简答题】细小孔隙内的毛细水既受重力作用，也受表面张力即（ ）作用。
【单选题】--Will Betty join the talent show on Friday? --I’m afraid she won’t. she is too to act in front of other people.
A.
shy
B.
confident
C.
pleased
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