泥石流是有一种相当威胁的自然灾害,对泥石流应采取防治结合、以防为主,拦排结合、()的方针。
A.以拦为主
B.拦排均用
C.以排为主
D.先拦后排
第1题
A、medium distance
B、long distance
C、personal distance
D、short distance
第2题
第4题
___ approximately from Marathon to Athen.
(A) distance (C) the distance
(B) is the distance (D) the distance is
第5题
A、a colonial economy, a handcraft economy, an industrial economy
B、a farming economy, a handcraft economy, an industrial economy
C、a colonial economy, a farming economy,an industrial economy
D、a handcraft economy,a farming economy,an industrial economy
第6题
In the first paragraph of the passage, 'the distance across' means ______.
A.the distance between Manhattan and New York
B.the distance between New York and Washington
C.nothing
D.the distance between Staten Island and Manhattan
第7题
According to the passage, social distance refers to___________
A. physical distance
B. psychological distance
C. physiological distance
D. philosophical distance
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