一慢性肾炎5年的病人，长期低盐低蛋白饮食，乏力恶心呕吐20天，血压140/100mm

下列离子方程式的书写正确的是

A．向亚硫酸钠溶液中加入足量硝酸：SO₃^2－+2H⁺＝SO₂↑+H₂O

B．玻璃试剂瓶被烧碱溶液腐蚀：SiO₂＋2Na^＋＋2OH^－＝Na₂SiO₃↓＋H₂O

C．高锰酸钾酸性溶液吸收二氧化硫：5SO₂＋2MnO₄^－＋2H₂O＝5SO₄^2－＋2Mn^2＋+4H^＋

D．Fe₂O₃溶于过量的氢碘酸中：Fe₂O₃＋6H⁺＝2Fe³⁺＋3H₂O

尿液酸度增高见于（）。

A.膀胱炎

B.痛风

C.代谢性碱中毒

D.呼吸性碱中毒

E.肾小管性酸中毒

t检验中，t＞t_0.05，ν ，P＜0.05，拒绝检验假设，其基本依据是

A．H₀ 已不可能成立，故应该拒绝

B．H₀ 成立的可能性很小，可以认为其不能成立

C．计算结果表明检验假设是错误的

D．原假设的内容极为荒谬，应予以拒绝

E．H₁ 错误的概率很小，P＜0.05，因此有很大把握接受它

知识资产是由（）组成。

A.专利

B.商标

C.版权

D.商业秘密

In year X a total of 355 billion dollars was spent for health care in the United States, 30 percent of which was spent by private health insurance companies. Was the amount spent for health care by the federal government’s medicare program less than 60 billion dollars ？（）

(1)In year X medicare spent more than , but less than , of the amount spent by the private health insurance companies for health care.

(2)In year X medicare spent 50 billion dollars less for health care than the amount spent by private health insurance companies.

A．条件(1)充分，但条件(2)不充分．

B．条件(2)充分，但条件(1)不充分．

C．条件(1)和(2)单独都不充分，但条件(1)和条件(2)联合起来充分．

D．条件(1)充分，条件(2)也充分．

E．条件(1)和条件(2)单独都不充分，条件(1)和条件(2)联合起来也不充分．