不属于工程建设地方标准化工作的任务的选项是（）。 A.制定工程建设地方标准 B.组织

阅读理解。

     Spending two or three hours playing outdoors each day can reduce a child's chance of becoming short-

sighted, a research shows. It challenges (挑战) the belief that short-sightedness is caused by computer use,

watching TV or reading in weak light.

     The Australian government researchers believe that sunlight is good for people's eyes. They compared

the vision (视力) and habits of 100 seven-year-old children in Singapore and Australia. In all, 30% of the

Singaporean children were short-sighted-this rate (比率) was ten times higher than Australian children.

     Both groups spent a similar amount of time reading, watching television and playing computer games.

However, the Australian children spent an average (平均) of two hours a day outdoors-90 minutes more

than the Singaporean children.

     Professor (教授) Ian Morgan, from the Australian Research Council's Vision Centre, said, "Humans are

naturally long-sighted, but when people begin to go to school and spend little or no time outdoors, the number

of short-sighted people gets larger. We're also seeing more and more short-sighted children in cities all around

the world-and the main reason may be that city children spend less time outdoors."

     Daylight can be hundreds of times brighter than indoor light. But why does playing outside prevent us from

becoming short-sighted? Scientists believe that natural light has a special chemical (化学物质) which stops

the eyeball from growing out of shape and prevents people becoming short-sighted. So be outdoors. It doesn't

matter if that time is spent having a picnic or playing sports.

1. How much time did the Singaporean children spend outdoors on average every day in the research?

A. 2 hours.

B. 90 minutes.

C.1 hour.

D. 30 minutes.

2. What is the fifth paragraph mainly about?

A. Why people become short-sighted.

B. Why natural light has a special chemical.

C. Why playing outside is good for one's eyesight.

D. Why daylight is much brighter than indoor light.

3. Which of the following is true according to the passage?

A. People will all become short-sighted after they begin to go to school.

B. Playing outdoors for 2 or 3 hours every day can help protect your eyesight.

C. Children in Australia are more likely to get short-sighted than those in Singapore.

D. If you spend two or three hours playing outside each day, you won't get short-sighted.

如图，A、B是一条电场线上的两点，若在某点释放一初速为零的电子，电子仅受电场力作用，并沿电场线从A运动到B，其速度随时间变化的规律如图所示．则（　　）

A．电场力F_A＜F_B

B．电场强度E_A=E_B

C．电势U_A＜U_B

D．电势能E_A＜E_B

阅读下面的文言文，完成后面题目。

褚彦回幼有清誉。宋元嘉末，魏军逼瓜步，百姓咸负担而立。时父湛之为丹阳尹，使其子弟并着芒屦，于斋前习行。或讥之，褚彦回时年十余，甚有惭色。湛之有一牛，至所爱，无故堕厅事前井，湛之率左右躬自营救之，郡中喧扰，褚彦回下帘不视也。又有门生盗其衣，褚彦回遇见，谓曰：“可密藏之，勿使人见。”此门生惭而去，不敢复还，后贵乃归罪，待之如初。尚宋文帝女南郡献公主，拜驸马都尉，除著作佐郎，累迁秘书丞。湛之卒，褚彦回悉推财与弟澄，唯取书数千卷。

宋明帝即位，累迁吏部尚书。有人求官，密袖中将一饼金，因求请见，出金示之，曰：“人无知者。”褚彦回曰：“卿自应得官，无假此物。若必见与，不得不相启。”此人大惧，收金而去。褚彦回叙其事，而不言其名，时人莫之知也。

褚彦回美仪貌，善容止，俯仰进退，咸有风则。每朝会，百僚远国使，莫不延首目送之，时人以方何平叔。尝聚袁粲舍，初秋凉夕，风月甚美。褚彦回援琴奏《别鹄》之曲，宫商既调，风神谐畅。王彧、谢庄并在粲坐，抚节而叹曰：“以无累之神，合有道之器，不可得已。”

时伧人常珍奇与薛安都为逆，后又求降，明帝加以重位。褚彦回谓全其首领，于事已弘，不足大加宠异。帝不从，珍奇寻又叛。建安王刘休仁，人才令美，帝与褚彦回谋诛之，彦回以为不可。帝怒曰：“卿痴不足与议事。”褚彦回惧而奉旨。明帝崩，遗诏以为中书令、护军 * * ，与尚书令袁粲受顾命，辅幼主，粲等虽同见托，而意在彦回。褚彦回同心理事，务弘俭约，百姓赖之。既而王道隆、阮佃夫用事， * * 赂公行，褚彦回不能禁也。性和雅，有器度，不妄举动，然世颇以名节讥之。

（节选自《南史•列传第十八》）

小题1:对下列句子中加点的词的解释，不正确的一项是（3分）

A．尚宋文帝女南郡献公主尚：娶

B．莫不延首目送之延：邀请

C．时人以方何平叔方：比作

D．建安王刘休仁，人才令美令：美好小题2:以下各组句子中，全都表明褚彦回“有器度”的一组是（3分）

①可密藏之，勿使人见 　        ②后贵乃归罪，待之如初

③褚彦回叙其事，而不言其名 　  ④善容止，俯仰进退，咸有风则

⑤帝与褚彦回谋诛之，彦回以为不可 ⑥褚彦回同心理事，务弘俭约

A．①②③

B．①②④

C．①③⑤

D．②④⑥小题3:下列对原文有关内容的概括和分析，不正确的一项是（3分）   

A．褚彦回的父亲带领随从们解救掉到井里的牛，场面喧闹混乱，褚彦回不喜欢这种场面，所以放下帘子来阻隔外面的混乱和喧闹。

B．褚彦回到袁粲家参加聚会，在风月和美的凉爽秋夜展示了自己高超的琴艺，得到了王彧、谢庄的高度赞扬，这说明褚彦回具有很高的音乐修养。

C．明帝在遗诏中任命褚彦回为中书令、护军 * * ，让他和袁粲共同接受遗命，辅佐幼主，但明帝更属意于褚彦回，由此可见皇帝对褚彦回的器重。

D．褚彦回和袁粲同心协力处理政事，褚彦回倡导俭约，因此百姓很依赖他，后来王道隆、阮佃夫掌权，褚彦回不能禁止，因此受到别人讥讽。小题4:把文中画线的句子翻译成现代汉语。（10分）

（1）卿自应得官，无假此物。若必见与，不得不相启。（5分）

（2）褚彦回谓全其首领，于事已弘，不足大加宠异。（5分）

重大危险源的安全监督管理工作主要由()一级安全部门进行。

A.国务院

B.省市

C.市区

D.区县

电压中枢点的调压方式一般分为（）。

A.逆调压

B.顺调压

C.常调压

D.自行调压