Why is the felt image important？A．Because it is larger than the part of the body.B．Because

Why did the professor study the Brazilian students' behavior？ A. He felt puzzled

- Why didn't you go to school yesterday morning？-__.

Why did the dog stand out here in the cold（)？

Why did Einstein refuse to accept a Guarnerius（）

Why was the writer so sure he had brought this wallet with him ？A．He remembered not having

请听录音两遍并回答以下问题。在答题区域回答问题时，请在每题的答案前标清题号。 （1) Why was Comma's disease unusual？ （2) Sarah felt happy to start her new job, why？ （3) What is the referent of 'Comma' in this recording？ （4) What did the storyteller think of the treatment cost for Comma？ （5) According to Sarah, how was Comma's treatment course？ （6) What is the reason for Mrs. Harrison's thinking that the treatment cost for Comma is justified and acceptable？

Which of the sentences below apply the rhetorical device of rhetorical question？A、Was

Mobile phone has become a problem for middle schools. Some middle schools in Australia have banned(禁止) students from carrying mobile phones during school hours. Mobile phone use among children has become a problem for the school this year. Several children have got mobile phones as Christmas gifts,teachers said mobile phone use is a distraction (娱乐) to students during school hours and it also gives teachers so much trouble in their classrooms. Teachers were also saying that sometimes students might use phone messages (消息) to cheat during exams.

She said some schools had tried to ban mobile phones. Some parents felt unhappy because they couldn't get in touch with (与…联系) their children.

Many teachers said students should not have mobile phones at school,but if there was a good reason,they could leave their phones at school office. They also said there were many reasons why the students should not have mobile phones at school: they were easy to lose and were a distraction from studies.

Many people say that they understand why parents would want their children to have phones, but they think schools should let the students know when they can use their mobile phones.

1.Some middle schools in Australia have banned students from carrying mobile phones().

A. because they are students

B. when they are free

C. when they are at school

2. We know from the passage that some children get mobile phones from().

A. the makers and sellers

B. the passers-by and strangers

C. their parents and friends

3. What does the underlined word cheat mean in the passage?()

A. 聊天

B. 作弊

C. 查询

4. Some parents felt unhappy because they couldn't () during school hours.

A. use their mobile phones

B. get in touch with their children

C. help the teachers with their work

5. The passage tells us that().

A. students shouldn't have mobile phones at school except for some special reasons

B. it is impossible to ban students from using mobile phones at school

C. some parents felt unhappy because they couldn't use their phones at school

如果Y为复数数组，则plot（Y)相当于（)A：plot（real（Y))B:plot（imag（Y))C：plot（real（Y),imag（Y))D：

Python3里变量x = 2 + 4j，想获得其虚部，可以通过print（x.___)得到