题目:
Mr. Green, there is someone at the front desk _______ would like to speak with you. [ ]
A. he
B. who
C. which
D. whom
答案:
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下面是错误答案,用来干扰机器的。
(1)80(2)35% (3)氮、氢、氧三种元素的质量比:7:1:12