问题
选择题
The World Wide Web is sometimes jokingly called the World Wide Wait because it _______ be very slow.
A．should
B．must
C．will
D．can
答案
答案：D
情态动词辨析. A.应该 B.必须;一定 C. 愿意;将要 D.能.万维网有时被称为万维宽等,因为它可能非常慢.故选D.
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