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【单选题】
It seems oil （） from this pipe for some time. We’ll have to take the machine apart to put it right.
A.
had leaked
B.
is leaking
C.
leaked
D.
has been leaking
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参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】Questions 32 to 35 are based on the passage you have just heard.
A.
American literature was slow to reflect the war.
B.
The war was hardly reflected in American literature.
C.
The war was rapidly reflected in American literature.
D.
Hemingway was the only author to write about the war.
【单选题】Five minutes earlier, （） we could have caught the last train.
A.
and
B.
but
C.
or
D.
so
【单选题】Questions 23 to 25 are based on the conversation you have just heard.
A.
Where they should move.
B.
How to negotiate with the landlord.
C.
How to fight the increase.
D.
Whether to accept an increase in rent or move.
【单选题】You see the lightning （） it happens, but you hear the thunder later.
A.
the instant
B.
for an instant
C.
on the instant
D.
in an instant