pH值对阳离子聚丙烯酰（CPAM，简称大阳离子）的影响是（）。
A、影响大
B、影响小
C、不影响
D、都不是
参考答案：B
—Go and ask her come .
—OK.
A．what time would she like to
B．at what time she’d like to
C．when would she like to
D．when she likes to
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