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【单选题】
变脸是（）中的一个重要表演技能。A.
昆剧
B.
京剧
C.
川剧
D.
越剧
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举一反三
【单选题】The boss insisted that the task _______before 5 o’clock this afternoon.
A.
was finished
B.
finished
C.
be finished
D.
should finish
【单选题】They attempted to finish the task before July.
A.
tried
B.
aimed
C.
agreed
D.
promised
【单选题】*温度相同的四块空气分别为干空气、未饱和空气、饱和空气和含水滴的饱和空气,绝热上升100m后,温度分别为t1、t2、t3、t4,下列关系成立________。
A.
t1=t2=t3=t4
B.
t1≤t2=t3>t4
C.
t1≤t2>t3=t4
D.
t1≤t2
【单选题】________ left before the deadline , it seems _______ that we will finish the task on time
A.
Because so much time; likely
B.
As so many times; possible
C.
Though a lot of time; possible
D.
With a lot of time; likely
【单选题】温度相同的四块空气分别为干空气、未饱和空气、饱和空气和含水滴的饱和空气，绝热上升100 m 后，温度分别为 t 1 、 t 2 、 t 3 、 t 4 ，下列关系成立 ________ 。
A.
t 1 = t 2 = t 3 = t 4
B.
t 1 ≤ t 2 = t 3 ＞ t 4
C.
t 1 ≤ t 2 ＞ t 3 = t 4
D.
t 1 ≤ t 2 ＜ t 3 = t 4
【单选题】温度相同的四块空气分别为干空气、未饱和空气、饱和空气和含水滴的饱和空气,绝热上升100米后,温度分别为t1、t2、t3、t4,下列何种关系成立?
A.
t1=t2=t3=t4
B.
t1=t2=t3>t4
C.
t1=t2>t3=t4
D.
t1=t2
【单选题】They _______to finish the task before July, but they didn’t make it because of the terrible weather.
A.
succeeded
B.
managed
C.
attempted
D.
thought
【单选题】Two days (past) (before) he realized that the task was (beyond his) (capacity).
A.
past
B.
before
C.
beyond his
D.
capacity
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