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【单选题】
对于物理吸附和化学吸附的关系,以下描述正确的是 prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>A.
(A) 即使改变条件，物理吸附和化学吸附也不能相互转化
B.
(B) Langmuir吸附等温式只适用于物理吸附
C.
(C) 在适当温度下，任何气体都可在任何固体表面上发生物理吸附
D.
(D) 升高温度对物理吸附和化学吸附都有利
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【单选题】I didn't see your sister at the party. If she __, she would have met my brother.
A.
has come
B.
had come
C.
did come
D.
came
【单选题】—Can I have ________ apple? —Oh, your sister has just had it.
A.
another
B.
other
C.
one more
D.
the other
【单选题】— Whose T-shirt is this? — It's _____________. [ ]
A.
your sister
B.
your
C.
your sister's
【单选题】-- Your father was angry ______ your sister just now, wasn't he?-- Yes, because he was not pleased ______ her homework.
A.
with with
B.
for to
C.
about for
【简答题】—________is your sister? —Sorry，l don-t know．
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