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【单选题】
某曲线半径为400m,超高为125mm,允许最大未被平衡超高采用75mm,该曲线最高允许速度为()。A.
82.3km/h
B.
85km/h
C.
90km/h
D.
45km/h
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【单选题】It can be inferred from the passage that ______.
A.
the energy crisis is similar to the natural disasters we had in the past
B.
the problem of energy is the most serious problem our country is confronted with
C.
the author is uninterested in the problems of our society
D.
the author is particularly worried about the crises we are facing
【单选题】It is implied in the text it is hard to______．
A.
carry life learning through
B.
tell the nature of life learning
C.
learn without going to school
D.
find a specially trained teacher
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