1. (2017·成都) 根据短文内容选择正确答案。

Usually, there are chairs and desks in every classroom.<br />But a new study says maybe students won't need chairs anymore one day.<br />They will use standing desks.<br />A research team in the US has made a study of primary school students.<br />They find that if children use standing desks in classrooms, they can finish their class<br />work better than those who sit.<br />Another study is made in high schools.<br />It also shows the use of standing desks can improve students' attention.<br />Many studies show that standing desks can help students lose weight and keep fit.<br />Many teachers say using standing desks makes students listen more carefully and behave better.<br />But a few teachers have their worries.<br />It is not easy for them to see what every student is doing in class.<br />Some students even walk around in the classroom.<br />What's more, the students are too tired by standing so long.<br />Some parents also worry about it.<br />Usually, there are chairs and desks in every classroom.<br />But a new study says maybe students won't need chairs anymore one day.<br />They will use standing desks.<br />A research team in the US has made a study of primary school students.<br />They find that if children use standing desks in classrooms, they can finish their class<br />work better than those who sit.<br />Another study is made in high schools.<br />It also shows the use of standing desks can improve students' attention.<br />These studies show that standing desks can help students lose weight and keep fit.<br />Many teachers say using standing desks makes students listen more carefully and behave better.<br />But a few teachers have their worries.<br />It is not easy for them to see what every student is doing in class.<br />Some students even walk around in the classroom.<br />What's more, the students are too tired by standing so long.<br />Some parents also worry about it.

1. （1） What will classrooms be like one day according to the study?   

   A . There will be chairs only. B . There will be standing desks. C . There will be no chairs or desks.
3. （2） Who has made the study on the use of standing desks in primary schools?   

   A . A team of researchers. B . A group of teachers. C . A number of parents.
5. （3） What can standing desks help students do?   

   A . Improve listening skills. B . Be more relaxed. C . Study better.
7. （4） What do many teachers think of the standing desks?   

   A . They make students behave better in class. B . They make students walk around in class. C . They make students more tired in class.
9. （5） Why do a few teachers have worries?   

   A . Because they have difficulty in watching every student. B . Because they think its bad for students' health. C . Because they think it makes parents worried.