在Excel 2010中，如果单元格中出现“#DIV/0”的信息，则表示（）。
A. 公式中出现了被零除的现象
B. 单元格引用无效
C. 没有可用数值
D. 结果太长，单元格容纳不下
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在新制的Cu(OH)2中加入1,3-丙二醇，能得到绛蓝色溶液？
A. 对
B. 错
A simple sentence always
A. starts with a capital letter, has a subject and action word or verb and ends in a punctuation mark.
B. have two independent clauses and at least one dependent clause.
C. ends in a noun
We discussed about winter break activities last week.
A. True
B. False
Today’s lesson is about
A. about winter break
B. winter holidays
C. successful people
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