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 hobbiesI like playing the violin playing the pianoA also B too C either D as well as说明原因、谢谢
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
选A A，attention，注意力；B，eyes，眼睛；C，interests，兴趣，利益；D，hobbies，爱好。
首先排除B，至于C、D，意思过于牵强，且hold one's attention 译为吸引住某人的注意力，解答完毕！
A 要学生保持注意多于一个小时不容易。
D 连词
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.