摘要： They form a polar molecule, that is, one with a slightly positive end and a slightly negative end.
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They form a polar molecule, that is, ________ with a slightly positive end and a slightly negative end.
[ ]
A. it
B. that
C. this
D. one
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B. that
C. this
D. one
They form a polar molecule, that is, ________ with a slightly positive end and a slightly negative end..
A. it B. that C. this D. one
查看习题详情和答案>>They form a polar molecule, ____ is, ____ with a slightly positive end and a slightly negative end.
|
A．which; that |
B．it; one |
C．that; one |
D．one; that |
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