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【简答题】

The mobile phone has become a problem for high schools. Some high-school students in Australia are not allowed to carry mobile phones during school hours.
The mobile phone used among children has become a problem for the school years. Several children have got mobile phones as Christmas presents, and more students want them. Marry Brown, a head, said that the mobile phone was a distraction (分心事) to students during school hours and it also gave teachers so much trouble in their classrooms. Teachers also say that sometimes students might use phone messages 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 their children.
Many teachers said students should not have mobile phones at school, if there was a good reason, they could leave their phones at school office. They also said phones were easily lost and were a distraction for studies.
Many people say that they understand why parents would want their children to have phones, but they think schools should let students know when they can use their mobile phones.
小题1:Some high schools in Australia have stopped students from carrying mobile phones __­­­­­__A.because they are studentsB.when they are freeC.when they are at schoolD.because they are children小题2:The head, Marry Brown said that the mobile phone was ____to students at school.A.a bad thingB.a useful toolC.a good thingD.of some help小题3:Some parents felt unhappy, because they couldn't__________ during school hours.A.use their mobile phonesB.leave their mobile phones in the school officeC.help the teachers with their workD.get in touch with their children小题4:The passage tells us that________A.students shouldn't have mobile phones at school except for some special reasonsB.it is important to ban students from using mobile phones at schoolC.some parents felt unhappy because they couldn't use their phones at homeD.parents should teach their children how to use mobile phones during school hour

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题目标签:心事
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【单选题】肝纤维化发生过程的中心事件是()

A.
HSC的活化
B.
Kuffer细胞分泌的多种细胞因子
C.
肝组织弥散性纤维化同时伴有假小叶形成
D.
细胞再生和胶原形成
E.
M过度积累