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【简答题】
低燃油油位警告灯所使用的电阻是( )
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【简答题】阅读短文，选择正确答案。 As many as 10 of the 17 kinds of penguins (企鹅) may be in er of disappearing. The number of penguins have decreased (减少) by 30% since 1987. Penguins are black and white birds that live...
【单选题】. ____________ the dinosaurs disappea red still remains a mystery.
A.
whether
B.
that
C.
if
D.
Why
【单选题】The old concerns lose importance and some of them vanish altogether.
A.
develop
B.
disappear
C.
link
D.
renew
【简答题】What does the underlined word ' stifling' ( Paragraph 1) probably mean? [ A] Disappearing gradually. [ B ] Giving out into the air. [ C ] Hot and breathless. [ D ] Pleasing and comfortable.
【单选题】I stood there until the plane _____ in the sky. [ ]
A.
has disappeared
B.
disappeared
C.
had disappeared
D.
would disappeared
【单选题】What is Robert worried more about?
A.
Mankind.
B.
Global warming.
C.
Earth's survival.
D.
Disappearing glaciers.
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