低倍镜换高倍镜时,视野变______(亮/暗).

题型:填空题

问题:

低倍镜换高倍镜时,视野变______(亮/暗).

考点:显微镜的构造和使用
题型:填空题

鉴于市场经济条件下,拜金主义、享乐主义、极端个人主义对教师队伍的影响,《中小学教师职业道德规范》提出了如下的道德要求()。

A.以权为公

B.尊重家长

C.廉洁从教

D.依法执教

题型:填空题

在手工会计核算中,需要根据企业规模、会计业务繁简程度,选择不同的账务处理程序,而实现会计电算化后,则不存在此问题。( )

题型:填空题

阅读理解

     In Yemen,you always see one type of vehicle on the road:the water truck.They travel mountain roads

and cross deserts to bring Yemenis the goods more valuable than oil.It is one that only the rich can afford

with the supply regularly  being cut off.Others must rely on scarce rain or charity to  fight thirst.

     Experts say Yemen is going to be the first country in the world to run out of water.The capital,Sanaa,

will run out of drinking water as early as 2025,says a report by the World Bank.

Hannan,an 18yearold from Lahej,said that only the rich could prepare for cuts in supply."In a good week

we'll have a water supply all week but then the following week there will be water only for a day or two,"

she said.

     She and her husband,a factory worker,pay 3,000 riyals (99 yuan) for a week's supply of water from a

touring water  truck when the taps run dry.With an income of only 20,000 riyals (660 yuan) a month,this

means the family often spend half their money on water.

     "There are a lot of people who can't afford it and they have to rely on their neighbors to help," she said.

     The average person in Yemen survives on onefifth of what the World Health Organization considers to

be enough water.

     In Taiz,in the south,tap water is available only once every 45 days.In the mountainous Malhan district in

the north,women and children climb a 1,500m mountain to collect water from a spring,often in the small

hours to avoid long queues.

     Yemen is located in Southwest Asia,bordering the Arabian and Red Sea.Yemeni people have lived on

scarce water supplies for thousands of years but that problem has been made serious by conflict in the are

a,the fastgrowing population and the use of water to grow a drug called qat.With one of the world's highest

rates of population growth-3.46 percent,Yemen is the poorest Arab country.

     The government is considering desalinating (淡化) seawater,but this would be expensive and it may

now be too late.The only other solution is to cut down on farming,but that means importing even more

food.

1.The passage aims to _____.

A. analyze the reasons why Yemen lacks water

B. suggest some solutions to the water issue in Yemen

C. present how serious the water problem is in Yemen

D. encourage the world to help Yemenis who are suffering from water shortages

2.When Hannan said that only the rich could prepare for cuts in supply,she meant that _____.

A. rich people drank more water than the poor

B. rich people could buy water from the water trucks if there was a water supply cut

C. she had a rich neighbor who often helped her during water supply cuts

D. the rich were not affected by water supply cuts

3.Which of the following may be a reason why Yemen is short of water?

A. The country has had no rain for a long time.

B. The population of Yemen is growing fast.

C. The government has failed to reduce farming.

D. People can't afford the water from government water trucks.

4.The best title for the passage is "_____".

A. Never take water for granted

B. The water truck-the commonest sight in Yemen

C. The first country to run out of water in the world

D. No water for Yemen

题型:填空题

从秦代开始,广西先民就疏浚河道,发展水路交通。到清代,形成了以()为干线的四通八达的广西水路交通网。

A.左江--右江

B.郁江—浔江

C.漓江—柳江

D.西江—桂江

题型:填空题

“一体化”工程中,对罪犯改造质量评估有什么要求?

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