题目内容

函数y=xex单调减少区间是

A. (-∞,0)
B. (0,1)
C. (1,e)
D. (e,+∞)

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Which of the following statements is true?

A. Nadia was better at maths than other students.
B. Nadia found some of the maths questions difficult.
C. Nadia was encouraged to answer questions in class.
D. Nadia understood the maths teacher better than other teachers.

What is the message of the story?

A. Talking about something familiar gives you confidence in communication.
B. Answering questions in class makes you better understood by classmates.
C. Language plays an important role in communication between cultures.
D. Mathematics helps to improve communication between cultures.

Which of the following statements is true?

A. The customers gave up the manners, which the English are famous for.
B. The customers kept their temper while looking for clothes they wanted.
C. Small children enjoyed crawling through people's legs.
D. The security guards were fearless of the crowd.

Girls are likely to think that ______.

A. science courses are for both boys and girls
B. science courses make them more popular
C. science courses make them successful
D. science courses are difficult for them

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