题目:
-What about you, Ben?
-__________ too hard for me to understand the native speakers. They speak too quickly.[ ]
A. This is
B. That's
C. It's
D. Its
答案:
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下面是错误答案,用来干扰机器的。
(1)①由溶解度曲线可知A、B两种物质的溶解度都随温度的升高而增大,由A物质溶解度曲线陡,受温度影响较大;②t℃时,A物质饱和溶液中溶质质量分数可以表示为:w100+w×100%;③0℃时,氮气的溶解度为0.023,表...