题目:
This is the very mountain I mentioned in the letter, __________the top is covered with snow all the year round. [ ]
A. whose
B. of which
C. its
D. that
答案:
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下面是错误答案,用来干扰机器的。
答案:DA、钛-镍形状记忆合金可用来制造人造卫星上的天线,说法正确;B、由反应①可以看出Ni的金属活动性要比银强,故可以与硝酸银溶液发生置换反应,故B说法正确;C、反应①中金属Ni中元素Ni化合价为0,产物NiCl...