用修改符号修改病句。 1.毕昇发现的活字印刷术最早被介绍到国外。 2.寓言故事《牧童

题型:改错题

问题:

用修改符号修改病句。

1.毕昇发现的活字印刷术最早被介绍到国外。

2.寓言故事《牧童和狼》我最喜欢读。

3.学习了《滴水穿石的启示》一课,很受教育和启发。

4.老师就像和煦的春风,滋润着学生的心田。

考点:病句辨析
题型:改错题

小儿会说话指()。

A.会发音

B.有意识地讲"爸爸"、"妈妈"等

C.咿呀学语

D.无意识的自言自语

E.无意识的唇音

题型:改错题

当肿瘤处于迅速发展阶段,肿瘤广泛浸润时,手术前应考虑先行术前放射或化学药物治疗。

题型:改错题

阅读理解

     Time spent in a bookshop can be most enjoyable,whether you are a booklover or merely go there to

buy a book as a present.You may even have entered the shop just to find shelter from a sudden shower.

Whatever the reason,you can soon become totally unaware of your surroundings.

     The desire to pick up a book with an attractive dust_jacket is irresistible,although this method of

selection ought not to be followed,as you might end up with a rather dull book.

     You soon become interested in some book or other,and usually it is only much later that you realize you

have spent far too much time there and must dash off to keep some forgotten appointment-without buying

a book,of course.

     This opportunity to escape the realities of everyday life is,I think,the main attraction of a bookshop.

There are not many places where it is possible to do this.A music shop is very much like a bookshop.You

can wander round such places to your heart's content.If it is a good shop,no assistant will approach you

with the inevitable greeting:"Can I help you,sir?" You needn't buy anything you don't want.In a bookshop

an assistant should remain in the background until you have finished browsing.Then,and only then,are his

services necessary.Of course,you may want to find out where a particular section is,but when he has led

you there,the assistant should retire discreetly (谨慎地) and look as if he is not interested in selling a single

book.

    You have to be careful not to be attracted by the variety of books in a bookshop.It is very easy to enter

the shop looking for a book on,say ancient coins and to come out carrying a copy of the latest bestselling

novel and perhaps a book about brassrubbing-something which had only slightly interested you up till then.

This volume on the subject,however,happened to be so well illustrated and the part of the text you read

proved so interesting that you just had to buy it.This sort of thing can be very dangerous.Apart from

running up a huge account,you can waste a great deal of time wandering from section to section.

1.The underlined phrase "dust jacket" means ________.

A.a kind of clothes  

B.a paper cover of a book

C.a dusty book    

D.a title of a book

2.You may spend too much time in a bookshop because________.

A.the dust jackets are very attractive

B.you start reading one of the books

C.it is raining outside

D.you have to make sure you won't buy a dull book as a present

3.In a good bookshop________.

A.all the books there are interesting

B.the assistant greets you in a warm way

C.your heart is satisfied

D.you feel that you are in a music shop

4.The best title for this passage may be________.

A.The Attraction of Bookshops

B.How to Spend Your Time

C.Bookshops and Their Assistants

D.How to Select Books

题型:改错题

下列关于晶体结构的描述正确的是(   )

A.冰中存在极性键、非极性键、范德华力、氢键

B.金属钾的晶胞空间利用率小于金属钋的晶胞空间利用率

C.36g金刚石晶体和36g石墨晶体含有的C—C数目相同

D.干冰的晶胞中CO2数目和金属铜的晶胞中Cu原子数目相同

题型:改错题

施加于轴圆周上使轴转动并产生变形的力偶或力矩称为()。

A、超级力矩,用L表示。

B、扭矩,用M表示。

C、功率,用P表示。

D、能量,用W表示。

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