问题 判断题

柴油发动机有效功率曲线随转速变化规律与汽油发动机近似,由于扭矩随转速变化不大,所以在一定范围内,柴油发动机的有效功率几乎与转速成反比增加。

答案

参考答案:错

阅读理解

Many students in China are learning English. Some of these students are small children  Others are teenagers(青少年). Many are adults(成年人). Some learn at school, others study by themselves. A few learn English language over the radio, on television or in films. One must work hard to learn another language.

Why do all these people want to learn English? It is difficult to answer that question.  Many boys and girls learn English at school because it is one of their subjects. They study their own(自己的) language, Maths and English. Some people learn English because it is useful(有用的) for their work. Many people often learn English for their further studies, because at college or university(大学) some of their books are in English. Other people learn English because they want to read newspapers and magazines in English

小题1:Many students in China ________ English

A.are learning

B.aren’t learning

C.learning

D.learn小题2: If one wants to learn another language well, he must ________.

A.learn at school

B.study by himself

C.work hard

D.study on television小题3: The underlined sentence ’1t is difficult to answer that question, means ’         .

A.That question is not difficult to answer

B.That question is not hard to answer

C.It is easy to answer that question

D.It is hard to answer that question小题4: ’Their own language’ means ________.

A.Chinese

B.English

C.French

D.Japanese小题5:The underlined phrase 6study by themselves’ means ’________’ in Chinese.

A.和他们一起学习

B.自学

C.向他们学习

D.通过学习

选择题