Is ______ 48 hours ______ the man-made satellite ______ is made in our country to orbit the planet around

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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

本题关键词:蒲m,阴m,M波,M区带,M亚基,M质粒,M型超声,CTX-M型酶,M球蛋白,M蛋白带;