如图所示，OB为一轻质杠杆，O为支点，OA=0.3m，OB=0.4m，将重30N

以下贮存物质的方法正确的是(　　)

A．少量白磷贮存在二硫化碳中

B．水玻璃贮存在带玻璃塞的玻璃瓶中

C．少量钠贮存在酒精中

D．少量钠贮存在煤油中

While still in its early stages, welfare reform has already been judged a great success in many states-at least in getting people off welfare. It’s estimated that more than 2 million people have left the rolls since 1994.

In the past four years, welfare rolls in Athens County have been cut in half. But 15 percents of the people who left in the past two years took jobs that paid less than $6 an hour. The resuit: The Athens County poverty rate still remains at more than 30 percent-twice the national average.

For advocates (代言人) for the poor, that’s an indication that much more needs to be done.

“More people are getting jobs, but it’s not making their lives any better,” says Kathy Lairn,a policy analyst at the Center on Budget and policy Priorities in Washington.

A center analysis of US Census data nationwide found that between 1995 and 1996, a greater percentage of single, female-headed households were earning money on their own, but that average income for these households actually went down.

But for many, the fact that poor people are able to support themselves almost as well without government aid as they did with it is in itself a huge victory.  

“Welfare was a poison. It was a toxin(毒素) that was poisoning the family,” says Robert Rector, a welfarereform policy analyst. “The reform is changing the moral climate in lowincome communities. It’s beginning to rebuild the work ethic(道德观), which is much more important.”

Mr. Rector and others argued that once “the habit of dependency is cracked, ”then the country can make other policy changes aimed at improving living standards.

13.From the passage, it can be seen that the auther .      

A.believes the reform has reduced the government’s burden

B.insists that welfare reform is doing little good for the poor

C.is overenthusiastic about the success of welfare reform

D.considers welfare reform to be fundamentally successful

14.Why aren’t people enjoying better lives when they have jobs?

A.Because many families are divorced.        B.Because government aid is now rare.

C.Because their wages are low.               D.Because the cost of living is rising.

15.What is worth noting from the example of Athens County is that .      

A.greater efforts should be made to improve people’s living standards

B.15 percent of the people there have been employed for two years

C.50 percent of the population no longer relies on welfare

D.the living standards of most people are going down

16.From the passage we know that welfare reform aims at_______ .

A.saving welfare funds                       B.rebuilding the work ethics(观念)

C.providing more jobs                        D.cutting government expenses

患者林某，男，46岁，因双侧扁桃体反复感染伴化脓发热到某医院就诊。医生考虑病情给他开了价格昂贵的新型抗生素，患者根据自己的经济状况要求改用平时常用的较便宜而有效的清热解毒的中药或青霉素。对此案进行伦理学分析，正确的是（）

A.医生有决定如何用药权

B.医生有用药决定权，患者的要求是无道理的

C.医生应向患者解释为何使用新型抗生素，若患者不同意应考虑患者的要求

D.当医生的权利与患者的权利发生冲突时，必须绝对服从患者的要求

E.在治疗过程中，患者有拒绝治疗权，医生应当给患者换药

我国成功预报的大地震是（）。

A、关中地震

B、唐山地震

C、海城地震

D、东京地震