试题与答案

检验Na2C03溶液中是否混有Na2SO4,应使用的试剂是 A.BaCl2溶液和

题型:选择题

题目:

检验Na2C03溶液中是否混有Na2SO4,应使用的试剂是

A.BaCl2溶液和稀硫酸

B.BaCl2溶液和稀盐酸

C.Ba(N03) 2溶液

D.BaCl2溶液

答案:

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题型:选择题

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题型:阅读理解

When should a child start learning to read and write? This is one of the questions I am most frequently (屡次地) asked. There is no hard and fast rule, for no two are alike (同样的), and it would be wrong to set a time when all should start being taught the intricacies (错综复杂的事物) of reading letters to form words.

If a three-year-old child wants to read (or even a two-year-old child for that matter), the child has the right (权利) to be given every encouragement (鼓励). The fact that he might later be “bored” when joining a class of non-readers (非读者) at child school is the teacher’s affair (事情). It is up to the teacher to see that such a child is given more advanced (高级的) reading material.

Similarly, the child who still cannot read by the time he goes to junior school at the age of seven should be given every help by teachers and parents alike. They should make certain that he is not dyslexic (having difficulty in reading 诵读困难的).

Although parents should be careful not to force youngsters (儿童) aged two to five to learn to read (if badly done it could put them off reading for life), there is no harm in preparing them for simple recognition (识别) of letters by labeling (标识) various items in the their rooms. For instance (比如), tie a nice piece of cardboard to their bed with BED written in neat (整齐的), big letters.

Should the young child ask his parents to teach him to read, and if the parents are capable (足以胜任的) of doing so, such an attraction (吸引) should not be ignored (对……不予理会). But the task should never be made to look like a hard job and the child should never be forced to continue, or his interest should start to flag (变弱).

1 This passage is mainly about ____ .

A. what qualities people teaching children reading should have

B. difference age groupings of children to be taught reading

C. when and how children should be taught reading

D. various problems of children who start learning to reading

2 In the writer’s opinion, children start learning to read ____ .

A. early and fast     B. at different time C. by a certain rule D. from word games

3 A three-year-old child who wants to read should ____ .

A. be encouraged   B. go to an infant school

C. start from fun stories D. join a class of non-readers

4The purpose of labeling items in the room is to ____ .

A. make it more colorful

B. teach children to write neatly

C. help children recognize simple letters

D. force children to develop the habit of

5 The writer suggest that ____ .

A. children should ask their parents to teach them to read

B. children should not feel bored if given advanced reading material

C. children starting to read should ask specialists for help

D. children should be taught with patience , care and a sense of humor

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