什么是植物类病毒？

阅读理解。

       Have you thought about what might have happened if American President Kennedy was saved in

  1963? Impossible, you'll say Kennedy was killed in Dallas, Texas, on 22nd November, 1963, and that's

   an end to it.

       But what would happen if he came back to life?  That's what the "stuff books"are made of. In 1988 an

   American named George Bernall wrote a book of this kind. The book is called "Promises to Keep". It

  was thought of as the best one of the kind. He made the book like real life. The story was so interesting

  that it kept readers turning the page till the end though it had over 800 pages.

       In fact we know that John F. Kennedy was killed and never came back to life. In this book, he comes

  back to life, and the story begins from there.

       The book set readers thinking, not especially about Kennedy's killing, but about what would happen

  after.

1. The phrase "come back to life" means _____.

A. never die again

B. become alive again

C. know one is still living

D. live forever                          

2. What kind of book is "Promises to Keep"?

A. A kind of study of Kennedy's killing.

B. An American horror novel.

C. A life story about Kennedy.

D. A story book developed from a true story.

3. The book "Promises to Keep" tells us _____.

A. how to write a "stuff book" like the one written by George Bernall

B. how to write about history

C. what would happen when Kennedy was brought back to life

D. how to make up a story about the presidents

4. The book not only keeps the readers interested, until the end, but makes them _____.

A. feel terrible

B. stop thinking

C. laugh at something

D. think about something

5. Although the story is _____, readers like to read it very much.

A. not interesting              

B. long

C. sad                      

D. not exciting

The sense of happiness will increase if you________ what you like to do.

A. do                     B. did                 C. will do

为除去CO₂气体中混有少量杂质SO₂气体,应选用的试剂是

A．Na₂CO₃溶液

B．饱和NaHCO₃溶液

C．NaOH溶液

D．Ba（OH）₂溶液

刘先生，已经累计缴纳失业保险费用2年。不知能领取几个月失业金？如何计算？

某银行会计临时请假离开公司，因为领导不在，为了节约时间，该会计人员将财务章交给无权使用此章的同事，并告知其可以利用此章处理紧急业务。这是为银行业务考虑的合理行为。( )