下列说法中正确的是( ) A.氢氧化钠可用嘴尝或用水接触 B.氢氧化钠有酸味和滑

题型:选择题

问题:

下列说法中正确的是(  )

A.氢氧化钠可用嘴尝或用水接触

B.氢氧化钠有酸味和滑腻感

C.氢氧化钠曝露在空气易吸收水分

D.氢氧化钠可作一切气体的干燥剂

考点:碱的性质碱的用途
题型:选择题

With the development of economics (经济), the problem of left-behind children (留守儿童) has become a serious social problem. More and more people have realized we should do something to help them.

One of the biggest problems is that the children are all hungry for the love from their parents. Many of them can just get a call or a letter from their parents half a year, a year or even several years, which makes some children lost their parents’ faces. When they meet their own troubles, they have no one to talk with. Nobody gives them enough care.

Because of being too far away from their parents, the left-behind children’s study is the second biggest problem. From a survey (调查) about their study, only two per cent of the children get good results, while ten per cent of them are common and eighty-eight per cent of them are poor. What a pity!

There are also many other problems of the left-behind children, such as having no ability to protect themselves, unhealthy lifestyles, spending too much pocket money and being crazy about Internet and so on.

In a word, to solve all the problems of the left-behind children needs the government, families and schools to try their best together.

小题1:How many problems are mentioned (提及) in the passage?

A.Two.

B.Three.

C.Four.

D.More than four.小题2:Which problem is NOTmentioned in the passage?

A.Having no place to live.

B.Being crazy about the Internet.

C.Unhealthy lifestyles.

D.Not study well.小题3:What’s the meaning of “some children lost their parents’ faces”?

A.Some children lost their parents.

B.Some children couldn’t find their parents.

C.Some children can’t remember what their parents look like.

D.Some children can’t get any information about their parents.小题4:Which of the following sentences isRIGHT?

A.All of the left-behind children aren’t good at study.

B.The left-behind children can see their parents often.

C.The left-behind children have much money.

D.The left-behind children problem is a social problem.小题5:What is the best title of the article?

A.The Left-behind Children

B.What is Left-behind Children

C.The Problems of the Left-behind Children

D.How to help Left-behind Children

题型:选择题

由于出口商将独家经销权给了独家经销商,一旦市场情况发生变化,独家经销商不积极销售产品,出口商又不能同其他客户联系成交,对市场开拓造成很大被动。

题型:选择题

患者女性,25岁,与家人争吵后离家,1小时后被人发现昏迷在田间,口中大蒜味浓烈,口吐白沫,送至当地医院抢救。查体见瞳孔针尖样,呼吸急促,双肺满布湿啰音、哮鸣音,ChE活力30%,关于治疗药物中选择戊乙奎醚(长托宁)的说法中不正确的有()

A.对外周M受体和中枢M、N受体均有作用

B.选择性作用于M1、M2受体

C.首次用药需与氯解磷定合用

D.为中枢性抗胆碱能受体药

E.作用时间长(半衰期约6~8小时),不良反应少

题型:选择题

高频保护运行中,每日按规定时间进行交换信号()。

A、1次

B、2次

C、3次

D、4次

题型:选择题

某单位与某设计院就购买该设计院设计专利签订了合同,此合同法律关系的客体是( )。

A.物

B.行为

C.智力成果

D.活动

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