从1949年到2010年经过了多少年？有几个闰年，几个平年？

已知函数f(x)=log_ax+x-b（a＞0且a≠1），当2＜a＜3＜b＜4时函数f(x)的零点为x₀∈（n，n+1）（n∈N*），则n=（    ）。

张某和李某分别是民事诉讼的原告和被告，在一审过程中，双方在立案后自行商定举证期限定为10天，并且得到了审理法院的认可。结果10天就要期满，原告张某发觉案件并不像想像中简单容易，遂向法院提出申请延期10天，得到了法院的批准。20天将至，被告李某又向法院提出，时间太短，为了寻找新的证据线索，请求法院准许再延期10天。对此，法院应该如何处理( )

A．举证期限不能一延再延，应不予准许

B．被告在第一次10天将至之际并未提出延长举证期限，现在提出不应准许

C．如果理由适当，法院还是可以准许被告的请求，延长举证期限

D．虽然司法解释规定了举证期限可以延期两次，但是是指同一当事人，所以不应准许被告的请求

在短周期元素中，原子最外电子层只有1个或2个电子的元素（　　）

A．是非金属元素

B．是稀有气体元素

C．是金属元素

D．无法确认为哪一类元素

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Why do people work? Of course, you may have asked yourself the same question as why you have to work. “Self-interest” in its broadest sense, including the interests of family and friends, is a basic motivation（动力）for work in all societies. But self-interest includes more than providing for living or getting wealth that people usually think. For example, a sense of duty, a feeling of competing, and a pleasure in working are other reasons for working. Studies show that most of Americans would continue to work even if they have had enough money to live comfortably.

When people work, they gain a contributing place in society. The fact that what they receive pay for their work means that what they do is needed by other people and what they are doing is necessary to society. Work can also place people in the larger class of society and provide all kinds of identities (身份) for them. In the United States, it is a cruel public fact that to do nothing is to be nothing and to do little is to be little. Work is commonly seen as the measure of an individual (个人). 

Some scientists have shown some of the ways that work has effect on our lives. Generally, people who always do their favorite work are more open to new ideas and easier to get along with others, and as parents they pass these characteristics on to their children. Our work then is an important social thing that makes us know who and what we are.

64. Generally, people work for _____.

A. self-interest      B. family       C. earning a living               D. the country

65. In the passage, “what they receive pay for their work” means _____.

A. that the work of the worker is recognized by society

B. what they do is needed by other people

C. that they are a necessary part of the social class

D. That the workers are clever

66. In the last paragraph, we can conclude that the author thinks ____.

A. that work can make the worker rich

B. that work can affect their lives

C. that work can make the worker tired

D. that work can make the worker know the world well

67. The title of the passage is “______”.

A. The Identity and the Work   B. The Work and the Society

C. The Society and Individual   D. The Importance of Work

复方川贝精片适用于（）

A.风热咳嗽

B.肺热咳嗽

C.风寒咳嗽

D.阴虚咳嗽

E.痰湿咳嗽