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【简答题】
改变群体等位基因频率的因素有哪些
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反馈参考答案：
举一反三
【简答题】电动式动力转向系统需要控制电机电流的 和 。
【单选题】【2013年3月】T18.以下关于逻辑运算符两侧运算对象的叙述中正确的是【 】
A.
可以是任意合法的表达式
B.
只能是整数0或非0整数
C.
可以是结构体类型的数据
D.
只能是整数0或1
【单选题】小课题研究实施方案中的“课题研究的背景和意义”叙述的内容是（）。 ①提出有待解决和重视的现实问题 ②论述本研究的价值或重要性 ③课题研究的进展情况 ④关键词的分析和课题界定
A.
①②④
B.
②③④
C.
①③④
D.
①②③
【简答题】In the Oral Approach language teaching begins with the spoken language. Material is taught orally before it is presented in the ______ form.
【单选题】Do you have any coloure pens? Sorry, I don't have_____. I think he has_____.
A.
any, any
B.
some, some
C.
some, any
D.
any, some
【单选题】do while循环至少可以保证循环体被执行多少次。The do while loop ensures at least how many times the body of the loop is executed.
A.
无限次Infinit
B.
根据条件才能确定Decided by conditions
C.
0
D.
1
【单选题】linguists give priority to the spoken language not the written language because ______.
A.
vocal sounds are derived from writing systems
B.
speech precedes writing everywhere in the world
C.
we have recording devices to study speech
D.
spoken language precedes written language only in Indo - European languages
【单选题】'Extinct Language' is a language that ______ .
A.
is spoken by deed people
B.
is spoken by Greek now
C.
is now not spoken
D.
is not spoken now but will be spoken soon
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