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【单选题】
下列关于磁场和磁感线的说法错误的是（ ）A.
磁体周围存在着磁场
B.
磁体外部的磁感线，从磁体的N极出发，回到S极
C.
磁场是由无数条磁感线组成的
D.
将条形磁铁分成若干段，每段磁体均有N、S极
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反馈参考答案：
举一反三
【判断题】Silk has also brought the ancient Chinese civilization overseas and it serves as the "cultural messenger" of Chinese civilization.
A.
正确
B.
错误
【单选题】某哺乳动物一个初级精母细胞经过减数分裂产生了染色体数目全部不正常的配子，最可能的原因是（）
A.
一对同源染色体没有发生分离
B.
四分体时非姐妹染色单体交叉互换
C.
一个次级精母细胞分裂不正常
D.
一条染色体的姐妹染色单体没有分开
【简答题】The river is well known as the “Cradle of Chinese Civilization” because Chinese civilization begins on its banks. The first dynasty of China, ___________ Dynasty, was established in the Yellow River V...
【简答题】Chinese civilization once had a significant influence on world civilization.
【单选题】听力原文：W：I read in the newspaper that the novel you are reading is excellent． M：I've also read some negative reviews． Q：What can be learned from the conversation? (19)
A.
The man thinks the book is excellent.
B.
Opinions about the book are varied.
C.
The woman wonders which newspaper the man is reading.
D.
You shouldn't believe everything you read.
【单选题】听力原文：W: Good morning, Chuck, are you also here waiting for Professor Johnson? M: Oh, yes. Good morning, Lori. The professor asked me to come for an interview. Do you know about the job working as a te...
A.
On his way home from school.
B.
Waiting for Lori.
C.
Doing his English assignments.
D.
Waiting to see Prof. Johnson.
【单选题】听力原文：M: Hi, Helen, I've been looking for you! W: Really? Such a coincidence. I am also looking for you. M: You don't know how difficult it is to find a car I want. W: Have you been to the second-hand ...
A.
A cheap new car.
B.
An extravagant new car.
C.
An old Buick Century.
D.
A used car that's a bargain.
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