Is 48 hours the man- made satellite is made in our country to orbit the planet around?
A. it; that; where
B. it; when; what
C. it for; that it takes; that
D. it; that it takes; which
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A. it; that; where
B. it; when; what
C. it for; that it takes; that
(答案→)D. it; that it takes; which
解析：考查强调句型。本题中的定语从句which is made in our country修饰先行词the man- made satellite。第一空和第二空的强调句型。句意：那颗我国生产的人造地球卫星要花48小时才可以绕地球飞行一周。故D正确。