春秋战国时期，中国思想文化空前繁荣，出现了“百家争鸣”的活跃局面，其中主张“爱人如己

税务代理的基本特征为( )。

A．主体资格的特定性

B．法律约束性与内容确定性

C．税收法律责任的不转嫁性

D．有偿服务性

E．公正性

某碳酸钠样品中含有少量氯化钠杂质，为测定该样品中碳酸钠的质量分数，进行了如下实验：

请回答下列问题：

（1）操作A的名称是________________，该操作过程中用到的玻璃仪器除烧杯外还必须有              。

（2）在实验过程中加入饱和石灰水后发生反应的化学方程式是                     。

（3）为探究上述反应后滤液中的溶质成分，甲同学向滤液中滴加过量稀盐酸，发现有气泡产生，则滴加盐酸前滤液中的溶质除氯化钠外还有                         ；滴加盐酸的过程中发生反应的化学方程式为                                      ____________。

阅读理解。

                                                         The Cost of Higher Education

     Individuals (个人) should pay for their higher education.

     A university education is of huge and direct benefit to the individual. Graduates earn more than non-

graduates. Meanwhile, social mobility is ever more dependent on having a degree. However, only some

people have it. So the individual, not the taxpayers, should pay for it. There are pressing calls on the

resources (资源) of the government. Using taxpayers' money to help a small number of people to earn

high incomes in the future is not one of them.

     Full government funding (资助) is not very good for universities. Adam Smith worked in a Scottish

university whose teachers lived off student fees. He knew and looked down upon 18th-century Oxford,

where the academics lived comfortably off the income received from the government. Guaranteed salaries,

Smith argued, were the enemy of hard work; and when the academics were lazy and incompetent, the

students were similarly lazy.

     If students have to pay for their education, they not only work harder, but also demand more from

their teachers. And their teachers have to keep them satisfied. If that means taking teaching seriously,

and giving less time to their own research interests, that is surely something to celebrate.

     Many people believe that higher education should be free because it is good for the economy (经济).

Many graduates clearly do contribute to national wealth, but so do all the businesses that invest (投资)

and create jobs. If you believe that the government should pay for higher education because graduates

are economically productive, you should also believe that the government should pay part of business

costs. Anyone promising to create jobs should receive a gift of capital from the government to invest.

Therefore, it is the individual, not the government, who should pay for their university education.

1. The underlined word "them" in Paragraph 2 refers to _____.[ ]

A. taxpayers

B. pressing calls

C. college graduates

D. government resources

2. The author thinks that with full government funding _____.[ ]

A. teachers are less satisfied

B. students are more demanding

C. students will become more competent

D. teachers will spend less time on teaching

3. The author mentions businesses in Paragraph 5 in order to _____.[ ]

A. argue against free university education

B. call on them to finance students' studies

C. encourage graduates to go into business

D. show their contribution to higher education

患者，男，60岁，因患结石性胆囊炎，拟行择期胆囊切除术，既往有2型糖尿病，冠状动脉粥样硬化心脏病，15年前发生急性心肌梗死，2年前安置人工心脏起搏器。

高危手术不包括以下哪些情况（）。

A.急症大手术

B.心脏瓣膜手术

C.大血管手术

D.短时间手术（<3h）

E.大量失血和失液的手术

湿敷有几种方法各有什么不同