中国外交部驻香港特别行政区特派员公署发言人表示,美国国会“中国委员会”为维护在港

题型:选择题

问题:

中国外交部驻香港特别行政区特派员公署发言人表示,美国国会“中国委员会”为维护在港美国公民的权益,发表的20 1 3年度报告罔顾事实,对香港政制发展等问题说三道四,我们对此坚决反对。这表明

①独立自主是主权国家的基本立场      ②主权国家应坚持权利和义务的统一

③中国坚定地维护自己的国家利益      ④国家间的共同利益是国家合作的基础

A.①③

B.②③

C.①④

D.②④

考点:中国的外交政策和平与发展世界多极化与国际竞争
题型:选择题

富营养化后期的水体中()。

A.水草生长旺盛

B.微量元素减少

C.溶解氧含量明显减少

D.营养元素含量增高

E.硝酸盐含量过高

题型:选择题

(8分)A、B、C、D、E、F为原子序数依次增大的短周期元素,B、C相邻且同周期,A、D同主族。C原子最外层电子数是核外电子层数的3倍,A、C能形成两种化合物甲和乙,原子个数比分别为2∶1和1∶1,甲为常见的溶剂。E是地壳中含量最多的金属元素;F元素为同周期电负性最大的元素。D和F可形成化合物丙,E和F可形成化合物丁。G为第四周期未成对电子数最多的元素。请回答下列问题:

(1)写出G基态原子的价电子排布式              

(2) B和C比较,第一电离能较大的是       (填元素符号),其原因为               

(3)甲、乙两分子的中心原子的杂化类型是否相同          (相同、不相同)。

(4)已知化合物丁熔点190℃,沸点183℃。丙和丁比较,熔点较高的是       (填化学式),

(5)配合物戊由G3+与甲、元素F构成,已知该配合物的配位数为6。在含有0.1mol戊的溶液中加入AgNO3溶液至过量,经过滤、洗涤、干燥后,得到28.7g白色沉淀。,则戊的化学式为               

题型:选择题

                               

People believes that climbing can do good to health. Where can you learn the skill of climbing then? If you think that you have to go to the mountains to learn how to climb, you’re wrong. Many Americans are learning to climb in city gyms(体育馆). Here, people are learning on  climbing. The climbing wall goes straight up and small holding places for hands and feet.

How do people climb the wall? To climb, you need special shoes and (保护带) around your chest to hold you. There are ropes(绳索)tied to your. The ropes hold you in place so that you don’t fall. A beginner’s wall is usually about 15 feet high, and you climb straight up. There are small pieces of metal that stick out for you to stand on and hold on to. Sometimes it’s easy to see the new piece of metal. Sometimes, it’s not. The most difficult is an your fear. It’s normal for humans to be afraid of falling, so it’s difficult not to feel fear. But when you move away from the wall, the and the ropes hold you, and you begin to feel safe. You move slowly until you reach the top.

Climbing attracts people because it’s good exercise for almost everyone. You use your whole body, especially your arms and legs. This sport gives your body a complete workout. When you climb, both your mind and your body can become stronger.

小题1:What can we infer from the passage?

A.People are fairly interested in climbing nowadays.

B.It is impossible to build up one’s body by climbing.

C.People can only learn the skill of climbing outdoors.

D.It is always easy to see holding places in climbing.小题2:The most difficult thing to do in wall climbing is _______.

A.to tie ropes to your

B.to control your fear

C.to move away from the wall

D.to climb straight up小题3:The word “workout” underlined in the last paragraph most probably means _________.

A.settlement

B.exercise

C.excitement

D.tiredness小题4:Why does the author write this passage?

A.To tell people where to find gyms.

B.To prove the basic need for climbing

C.To encourage people to climb mountains.

D.introduce the sport of wall climbing

题型:选择题

下列属于接闪器的是()。

A、架空地线

B、保护间隙

C、阀型避雷器

D、管型避雷器

题型:选择题

确保空调和室内外地漏排水的()。

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