It is difficult to hold the students' for more than an hour.
问题描述：
It is difficult to hold the students' for more than an hour.
It is difficult to hold the students' for more than an hour.
A attention B eyes C interests D hobbies
I like playing the violin playing the piano
A also B too C either D as well as
说明原因、谢谢
答
1.A 原因：原句的意思是‘对于学生来说保持.多于一个小时是困难的.’
A.要学生注意力集中一个小时以上是困难的.（正确）
B.要学生保持睁眼睛一个小时以上是困难的.（不太可能吧!睁眼睛几分 钟就不行了吧!）
C.要学生保持兴趣【同上】（句意不符吧!所以排除!）
D.要学生保持爱好【同上】（同样句意不符,排除!）
2.D 原因：原句要表达的是‘我喜欢拉小提琴也喜欢弹钢琴’四个选项全是‘也’的意思.
A.also一般用于主语后,句中,正确表达是：I like playing the violin also like playing the piano.
B.too用于句尾,而且too前面必须有逗号【,】所以排除.
C.either也用于句尾,用于否定句,所以也排除.
D.as well as用于句中,主谓时态一致,所以选D.