6. The less the surface of the ground yields to the weight of the body of a runner, ---to the body.
(A) the stress it is greater
(B) greater is the stress
(C) greater stress is
(D) the greater the stress
7. And ideal is a standard ---people judge real phenomena.
(A) how
(B) of
(C) by which
(D) for it
8. Maine has ---weather than most of the other states in the continental United States.
(A) coolest
(B) the coolest
(C) cooler
(D) the cooler
9. Amoebas are ---small to be seen without a microscope.
(A) far too
(B) far and
(C) so far
(D) as far as
10. Graphite conducts electricity ---does not burn.
(A) because
(B) if
(C) when
(D) and
参考答案：
BBACD
ACADC
编辑推荐：
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