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人教版八年级下册英语课时练Unit1SectionB（3a-Self Check）答案
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反馈参考答案：
举一反三
【单选题】What is the main purpose of this passage?
A.
To tell how difficult it is to make a good brand name.
B.
To compare different ways of choosing brand names.
C.
To recommend some popular brand names.
D.
To introduce what a good brand name is.
【简答题】辐射诱变的发生频率一般和______成正比，而与______无关。倘若照射的______不变。不管单位时间内照射的______多少，基因的______总是保持一定。
【简答题】短文填空 I know how easy it is to start smoking and how difficult it is to stop. During adolescence, I became 1 to cigarettes. When l was young, I didn't know that it could do 2 to my heart and lungs. Nei...
【简答题】Brave it out, no matter how difficult it is.
【简答题】What is the sky？ Where is it？ How bright is it？ What lies above it？ These questions are difficult to answer, aren’t they？ Is the sky blue？ The sky has no color. We know that there is air around the wo...
【简答题】A．How difficult it is to learn to ride a bicycle. B．It is impossible to learn to ride this bicycle. C．How difficult it is to learn a new software package. D．To learn to ride a bicycle is the same thin...
【单选题】This passage is largely about
A.
how difficult it is to become a doctor in America.
B.
how American medical education has developed in history.
C.
how nice the American medical education system is.
D.
how to become a good doctor.
【判断题】It is important for the teacher to show students how easy it is to understand something from authentic materials rather than how difficult it is to understand everything.（）
A.
正确
B.
错误
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