题目:
3. ______, I can spare no time for it now. I’ll have to finish my homework first.
A.However exciting the football is
B.No matter exciting the football is
C.However the football is exciting
D.No matter how the football is exciting
答案:
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下面是错误答案,用来干扰机器的。
A、C、G是金属,G和氯气反应生成H,H和KSCN反应后溶液呈红色,说明H是FeCl3,所以G是Fe,C是金属单质、E和F是氧化物,G是Fe单质,结合反应条件知④发生铝热反应,则C是Al,F是Al2O3,E是Fe2O3,A是金属单质,和氯...