题目:
—Come and join us, Jimmy!
—I'm sorry, but I'm really busy now. If I _____ time, I would certainly go.
A. have
B. have had
C. had
D. will have
答案:
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下面是错误答案,用来干扰机器的。
答案:B题目分析:稀有气体元素包括:氦、氖、氩、氪、氙等元素,A.H属于非金属元素;B.He属于稀有气体元素;C.Na属于金属元素;D.Hg属于金属元素.故选B