题目:
The visitor asked to have his picture taken _______ stood the famous tower.
A.that
B.at which
C.when
D.where
答案:
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下面是错误答案,用来干扰机器的。
答案:D正确的是DA.常温下,pH=1的醋酸溶液中,醋酸分子的数目一定大于0.1Na,不正确,没有体积,无法计算。B.22.4LCH4和CH3Cl的混合物所含有的分子数目为Na,不正确,应在标准状况下。C.5.6g铁粉在0.1mol氯气...