下列解决缺水问题的措施中属于“开源”的是()①修水库②合理开发及提取地下水③改进灌溉

题型:单项选择题

问题:

下列解决缺水问题的措施中属于“开源”的是()

①修水库

②合理开发及提取地下水

③改进灌溉技术

④提高水的利用率

A.①②

B.①③

C.②④

D.①④

考点:地理学地理学综合练习地理学综合练习题库
题型:单项选择题

阅读理解。

    What is your favourite colour? Do you like yellow, orange, and red? If you do, you must be an optimist,

a leader, an active person who enjoys life, people and excitement. Do you prefer grey and blues? Then you

are probably quiet, shy and you would rather follow than lead. If you love green, you are strong-minded and

determined. You wish to succeed and want other people to see you are successful. At least this is what

psychologists tell us, and they should know, because they have been seriously studying the meaning of

colour preference, and the influence that colours have on human beings. They tell us that we don't choose

our favourite colours as we grow up. If you happen to love brown, you did so as soon as you opened your

eyes, or at least as soon as you could see clearly.

    A yellow room makes us feel more cheerful and more comfortable than a dark green one, and a red dress

brings warmth and cheer to the saddest winter day. On the other hand, black is depressing. Light and bright

colours make people not only happier but more active. It is a fact that factory workers work better, harder,

and have fewer accidents when their machines and painted orange rather than black or dark grey.

    Remember, then, that if you feel low, you can always brighten your day or your life with a new shirt or

a few colourful things. Remember also that you will know your friends and your enemies better when you

find out what colours they like and dislike. And don't forget that anyone can guess a lot about your character

when you choose a piece of handkerchief.

1. 1. According to this passage, ______.[ ]

A. One is born with his colour preference

B. One can choose his colour preference

C. One's colour preference is changeable

D. One has to choose his favorite colour as soon as he can see clearly

2. We would pay attention to colours because ______. [ ]

A. Colours do have influence on our state of mind

B. Colours may have influence on factories

C. Light and bright colours make people happy

D. You can know your friends better by the colours they like or dislike

3. The main idea of this passage is ______. [ ]

A. one's colour preference shows one's character

B. you can brighten your life with wonderful colours

C. psychologists have been studying the meaning of colour preference

D. one's colour preference has something to do with his character and colours have influence on

     human beings

4. Psychologists believe that ______. [ ]

A. people's favourite colours change as they grow up

B. people are nearly born to love some colours

C. people choose their favourite colours when they grow up

D. people can easily get what the others think of

5. "I am feeling black" means ______. [ ]

A. I am depressed

B. I am very happy

C. I am excited

D. I am feeling well

题型:单项选择题

重选设备工艺效果采用()、()、数量效率和错配物等指标。

题型:单项选择题

下列实验现象描述正确的是

A.红磷在空气中燃烧,白雾升腾,放出热量

B.铁丝在空气中剧烈燃烧,火星四射,放出大量的热量,并生成黑色粉末

C.硫在氧气中燃烧,发出微弱的淡蓝色火焰,放出热量,产生刺激性气味的气体

D.木炭在氧气中燃烧,发出白光,放出热量,同时产生能使澄清石灰水变浑浊的气体

题型:单项选择题

市长议会制

题型:单项选择题

甲男,1970年8月出生;乙女,1974年 3月出生。甲男的父亲是乙女母亲的亲堂兄,双方父母从小就给两人订下了“娃娃亲”。 1991年,在双方父母的撮合下,甲男与乙女举行了婚礼,但未领取结婚证,此后也一直未补办婚姻登记手续。共同生活当中,双方因性格不合而矛盾渐生。1998年,甲男向乙女提出分手。关于甲男与乙女婚姻的效力,下列选项中哪一项是正确的

A.婚姻有效,是事实婚姻
B.婚姻不存在,为非法同居关系
C.婚姻无效,因为双方为近亲关系
D.婚姻无效,因为未达法定婚龄

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