问题 不定项选择题

某同学在观看电视广告时,对“朴雪”口服液中含有Fe2+或Fe3+产生了浓厚兴趣,他采取了下列做法,你认为不合理的是[ ]

A.  由于维生素C具有还原性,可以和朴雪口服液同时服用

B.在检验铁的价态时,该同学先滴入KSCN溶液后滴入氯水,能判断出铁元素的价态

C.在检验铁元素的价态时,该同学先滴入氯水,后滴入KSCN溶液

D.Cl2能够将Fe2+氧化为Fe3+

答案

答案:C

阅读理解

阅读理解。

     One morning, Wu Liang discovered that her classroom had changed. She found that the desks were no

longer in rows, but pushed together to make eight bigger desks. She was too excited about it for the first

two days and she couldn't listen to the teachers carefully. But soon she and her classmates got used to this

new classroom arrangement (安排). "Now our class is quieter," said Wu. "What's more, we can come up

with our own ideas and learn more through discussion. It's a better way to study."

     Li Yu liked it, too. He said, "Group members first discuss, and then show ourselves in front of the whole

class. It makes us believe in ourselves." It was part of a reform (改革) at Li's school. The school made this

reform because they wanted to provide students with easier ways to study and more chances to discuss.

"Our school hopes it can improve students' abilities (能力) to study by themselves and work in groups," said

Zhang Ming, an English teacher.

     However, the reform has demanded (要求) more from teachers. Now they have only 15 minutes to give

the lesson which should be taught in 45 minutes before. It is difficult to teach in such a short time. The

teachers have to find better ways to teach more effectively.

     "The reform demands more, but I'm sure it is helpful," added Zhang Ming.

1. After the new classroom arrangement it was easier for Wu Liang and her classmates to ____ in class.

A. discuss with each other

B. sit in the classroom

C. push desks together

D. teach a lesson

2. The school made the reform in order to provide students with ____ to study.

A. noisier classes

B. easier ways

C. more seats

D. fewer chances

3. The Chinese meaning of the word "effectively" in this passage is ____.

A.简单地

B. 明确地

C. 有效地

D. 认真地

4. The best title of this passage may be "____".

A. Students' Friendship

B. Teachers' Hope

C. Discussion in Class

D. New Look in Class

单项选择题