保护生物物种，就要关注它们目前的生存状态，分析对其生存产生影响的各种环境因素．尝

已知一次函数y=kx-1，请你补充一个条件（     ）使函数图象经过第二、三、四象限。

患者便血月余，血色紫暗，夹血块，舌紫暗，脉细涩，证属（）

A.血瘀证

B.气虚证

C.气逆证

D.血寒证

E.血虚证

阅读理解。

     For a long time being happy was considered something that just happened, and there was nothing

special about it. Now we know that getting along with other people is something that we can work at.

It is possible to act in such a way that other people will like us better. One way is being unselfishness,

not wanting everything from our friends. Another way is to look for good points, not bad ones in other

people. It is surprising how successful this treasure hunt can be.

     You don't have to be spinelss (软弱的) in order to be popular, in fact, you will be liked and respected

if you are not afraid to stand up for your rights. But do it politely and pleasantly. Being friendly and polite

to your group, to other people and to strangers and especially to those who do not look important or do

not interest you is one way to develop a good character.

     You can not expect to be perfect, and so you must learn not to be unhappy when you make mistakes.

Everyone makes mistakes, and no one is to be blamed (责备) unless he refuses to learn from them. Many

young people become discouraged when they know in themselves qualities (品格) that they do not like-

selfishness, laziness, and other unpleasant qualities. Just remember that we all have some of these faults

(过错) and have to fight against them.

     At the same time, it is important to remember that, while you are probably no worse than others, the

best way to be happy is to think yourself above other people. When something is wrong, it is good sense

to try to make it right. Perhaps you don't like a teacher or a classmate. Try to see why, and look at yourself,

too. To be sure that you are not doing anything to make that person dislike you. Some day, things may turn

out all right, then you will have to learn to get along the best with situation, without thinking too much about

it. Worrying never helps in a situation you can't change.

1. One of the two ways the author suggested for us to get along with others is _____. [ ]

A. to draw attention of our friends

B. to demand the best share of everything

C. to look for treasure in order to be successful

D. to pay more attention to other people's strong points

2. According to the passage, if one wants to be popular one needs to _____. [ ]

A. be polite and friendly

B. give up some rights

C. avoid arguing with other people

D. be ready to change his or her character

3. The passage shows that there is no perfect person but someone should be blamed if he _____. [ ]

A. is no better than others

B. is selfish and lazy

C. does not draw a lesson from his own fault

D. is very happy about his unpleasant quality

4. The passage implies (暗示) that in order to be a happy person, one should consider oneself _____. [ ]

A. no better than other

B. not the same as others

C. as having something better than others

D. as having better chances than others

阅读材料：

现代普通城市中国人结婚用具变化：

1、五十年代，基本生活用品。

2、六、七十年代，凭票购买手表、缝纫机、自行车。

3、八十年代，彩电、冰箱、洗衣机。

4、九十年代，电话、电脑、空调。

请回答：

分别概述上述材料中现代普通城市中国人结婚用具变化的社会经济原因，并谈谈你的感受。

自阀在什么位置制动管是充气的？机车状态有何区别？