单项选择题

mtDNA中含有()。

A.87个基因
B.大量调控序列
C.内含于
D.终止子

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教师在设计科学教育活动时，要考虑给幼儿表达和交流的机会。()

答案：正确

What a Seattle bartender told The Seattle Times is cited to show that ______.
A．bars are not suitable for nonsmokers to work in
B．the desires of smokers should not be neglected
C．businesses are obliged to serve all the customers
D．the minority's desires should be heartily satisfied

A.
A．bars
B.the
C.businesses
D.the