将50 mL 0.1 mol·L-1 NaCl和50 mL 0.5 mol·L-

题型:选择题

问题:

将50 mL 0.1 mol·L-1 NaCl和50 mL 0.5 mol·L-1 CaCl2溶液混合后,若溶液的体积为二者体积之和,则混合溶液中c (Cl-)为

A.1 mol·L-1

B.0.55 mol·L-1

C.0.67 mol·L-1

D.2 mol·L-1

考点:物质的量
题型:选择题

相同质量的H2SO4与H3PO4中的氢原子数之比为

A.2: 3

B.3: 2

C.1:2

D.2:1

题型:选择题

酸碱失衡时,口唇呈樱红色提示()

A.代谢性酸中毒

B.呼吸性酸中毒

C.代谢性碱中毒

D.呼吸性碱中毒合并代谢性碱中毒

E.代谢性碱中毒合并呼吸性酸中毒

题型:选择题

中央经济工作会议明确提出2007年“又好又快”发展的新思路。从“又快又好”到“又好又快”,表明我国更加重视经济发展的质量和效益。下列选项中,符合经济“又好又快”发展要求的有[ ]

A.节约资源,节能降耗

B.减少污染,降低工业废弃物排放

C.只要经济效益上去了,污染、能耗问题无所谓

D.落实科学发展观,形成经济与社会、人与自然之间的和谐关系

题型:选择题

阅读理解。

     "Hey, little buddy, will you support me when I'm getting old?" Han Wenshan, 35 years old, asked his

new-born baby as he picked him up at home.

     The Chinese tradition of raising sons to support parents in their old age has been weakened by the rapidly

growing economy and improved standard of living. As is the case with developed countries, China faces an

aging society. People are living longer and having fewer children. Therefore many Chinese families are falling

into a 4-2-1 family pattern: a couple raises one child and supports four elderly parents. But few realize this

problem.

     The aging of the population is a trend that now affects a growing number of countries. Not long ago, the

Information Office of the State Council, China's cabinet, issued a white paper on measures China is taking to

help its elderly population. The paper said China's population entered the aging phase (阶段) at the end of the

20th century as the proportion of people aged 60 and above accounted for over 10 percent of the entire

population. By the end of 2005, China had nearly 144 million people over 60, accounting for 11 percent of the

population, according to the white paper.

     An expanding aged population inevitably means that many issues must be settled, as the problem concerns

every aspect of society. It puts more pressure on each family, causing disturbing economic consequences

and serious social problems. It also challenges the labor force supply and the pension system.

      "I used to think that it's not an issue for me to provide for the aged," said Han, whose parents and

parents-in-law all enjoy pensions and medical insurance. But last year Han's father suffered a serious illness

and afterward Han began to feel the pressure on his shoulders.

1. Which of the following is not caused by an aging society?

A. Social problems.

B. The problem of the pension system.

C. More pressure on the family.

D. Unemployment.

55. From the passage we can infer ______.

A. the aging problem is one of the concerns for the Chinese government

B. China will encourage young couples to have more than one child

C. many people haven't realized the problem of an aging society

D. children will not support their parents in an aging society

2. Which of the following can be used to replace the underlined word inevitably?

A. surprisingly

B. naturally

C. hopefully

D. unluckily

3. From the passage we can see that ______.

A. China is the only country to face an aging society

B. most of the developing countries face an aging society

C. countries with a large population face an aging society

D. more and more developed countries face an aging society

题型:选择题

农信社应根据贷款及抵押物的风险状况合理确定最高额抵押担保的主债权发生期间,其中抵押物为不动产的,主债权发生期间一般不得超过()年;抵押物为动产的,主债权发生期间一般不得超过()年。

A.三,一

B.三,二

C.五,一

D.五,二

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