我国推广的加碘食盐是在食盐中加入一定量的碘酸钾（KIO3），在KIO3中碘元素的

It’s duty of every man to work. The life of a lazy man is of no use to himself and to others. If the man is too lazy to work, he will usually become a not useful man. Everyone, when he is young, should learn some useful work.

But it’s not enough for a man to learn some kind of work. He should put his heart and soul (精力) into his work, and not waste his free time. “Work while you work and play while you play” is as good rule for young people as old.

There is no better to help to diligence than the habit of early rising, and this, just like all other good habits, is most easily formed in youth (青年). There is an English say “Lost time never returns.” This means that everybody must be diligent, and make good use of time. One must study hard when one is young so that one can make great progress, succeed in life and become useful to one’s country. So we can say that diligence is the mother of success.

小题1:The underlined word “diligence” in the third paragraph means “ ________” in Chinese.

A．惜时

B．勤奋

C．失败

D．智慧小题2:If a man wants to be of useful himself and to the people, he should __________.

A．learn some useful work

B．do something in his free time

C．put his heart and soul in everything

D．try his best to work without rest小题3:In order to learn to be diligent, it’s very important for young people to learn to ________.

A．work while you work and play while you play

B．work all the time without playing

C．form the habit of getting up early

D．learn some good subjects小题4:One will be successful in life if he _____________ when he is young.

A．spend more time learning

B．is diligent in his study

C．loves his school

D．gets up early小题5:Which of the following may be the best title for this passage?

A．Lazy boy can learn to be diligent

B．Young people should rise early

C．Diligence, the mother of success

D．Lost time never returns

慢性骨髓炎死骨摘除术的指征是（）

A.发热，局部红肿，有死骨及死腔

B.开放性骨折感染，骨折尚未愈合，有大块死骨

C.有死骨、死腔，包壳形成薄弱

D.死骨分界不清，有死腔与窦道

E.骨包壳充分形成，有死骨、死腔

城市高程控制网的高程系统，应采用国家统一的1956年（）系统。

A.渤海高程

B.南海高程

C.北京高程

D.黄海高程

以下不属于BGP协议执行过程中使用的分组是（）。

A.打开分组

B.通知分组

C.维护分组

D.保活分组

对于需求明确、用户密度较高的新建住宅小区宜采用的分光方式是（）。

A、一级分光

B、二级分光

C、三级分光