The flatter a hair appears under a microscope, wavier it is．A.althoughB.whichC.a
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The flatter a hair appears under a microscope, _______ wavier it is．
A.although
B.which
C.and
D.the
试题答案
D
句意为：“在显微镜下头发显得越是扁平，它就越呈波浪形。”