7．What is most likely to be the result of the seven－week trial?

　　A．The standing desks can't be used at all.

　　B．It is good for students to use stand－up desks.

　　C．More tests should be done in other schools.

　　D．The students are different in personality.

　　答案：B　细节理解题。根据第四段最后一句“While official results are not out yet, early reactions from both teachers and students, have been extremely encouraging.”可知答案是B。

　　8．Why do the teachers like the standing desks?

　　A．Because the educators can draw the students' attention.

　　B．Because the teachers can keep the students healthy.

　　C．Because the students can have a walk in the classroom.

　　D．Because the standing desks can keep the students concentrated.

　　答案：D　细节理解题。根据参与实验的25名老师的反馈可以看出，这种课堂会使学生注意力集中，可知答案。

　　1．exchange n．/v. 交换

　　2.cruelty n. 残酷

　　3．consumption n. 消耗

　　4.unexpected adj. 未预料到的

　　5．previously adv. 以前地，先前地

　　1．participate in 参与，参加

　　2．have something to do with 与……有关

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