河口与一般河流最显著的区别是( )。
A．河口的流量较小
B．河口的流速较慢
C．河口的河宽较大
D．河口受到潮汐的影响
参考答案：D
— Jim, Tom is looking for his English book. Is this _____?
— No, that is _____. I don't know where his is. [ ]
A. his, mine
B. he, mine
C. him, mine
D. his, my
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