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【简答题】
the PLA men the villagers would not have survived the flood．
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【单选题】After the ( ) traveling, he felt very ( ).
A.
tiring, tiring
B.
tired, tired
C.
tired, tiring
D.
tiring, tired
【单选题】He said he liked traveling by train, but after six hours standing in the corridor, he changed his __________
A.
sound
B.
voice
C.
tone
D.
tune
【单选题】Pleasant as they made it_____,we still felt tired after the long journey.
A.
to travel
B.
traveling
C.
traveled
D.
travel
【简答题】设X(t)为平稳过程，其自相关函数R X (τ)是以T 0 为周期的函数．证明：X(t)是周期为T 0 的平稳过程．
【单选题】He used to say he liked traveling by train, but now after eight hours standing in the corridor, he changed his______.
A.
sound
B.
voice
C.
tone
D.
tune
【简答题】阅读理解。 Have you ever gone traveling on the train that was named after the letter D? Named after the letter D, the new trains run at speeds of 200 to 250 kilometers one hour. These are much faster than ...
【单选题】After traveling in the desert for five days, we found a tiny oasis, where there was a well and ( ) green grass.
A.
a patch of
B.
a bunch of
C.
a pinch of
D.
a packet of
【单选题】After traveling in the desert for many days, they found a tiny oasis, where there was a well and ________ green grass.
A.
a patch of
B.
a bunch of
C.
a pinch of
D.
a packet of
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