已知等体积的20%硫酸溶液其质量大于10%硫酸溶液，则将溶质的质量分数为a%、物

在发生某公共卫生事件期间，有专业机构认为该事件在一段时间内没有发生大规模群体感染的标志为“连续10天，每天新增疑似病例不超过7人”，根据过去10天甲、乙、丙、丁四地新增疑似病例数据，一定符合该标志的是[ ]

A.甲地：总体均值为3，中位数为4

B.乙地：总体均值为1，总体方差大于0

C.丙地：中位数为2，众数为3

D.丁地：总体均值为2，总体方差为3

一束光与平面镜的夹角为40°则反射光线与入射光线的夹角是______度，当入射角增大10°，则反射光线______（填“远离”或“靠近”）法线______度．

What color do you like best? Do you like yellow, orange and red? If you do, you must be an optimist, a leader, or an active person who enjoys life, people and excitement. Do you prefer grey and blue? Then you are probably quiet, shy and you would rather follow than lead. If you love green, you are likely to be strong-minded and determined. You wish to succeed and want other people to see you are successful. At least this is what psychologists （心理学家）tell us. They have been seriously studying the meaning of color preference, and the effects that colors have on human beings. They tell us that we don’t choose our favorite color as we grow up. If you happen to love brown, you do so as soon as you open your eyes, or at least as soon as you could see clearly.

　　Black is depressing while light and bright colors make people not only happier but more active. A yellow room makes us feel more cheerful and more comfortable than a dark green one does, and a red dress adds warmth and cheer to sad winter days. It is a fact that factory workers work better, harder and have fewer accidents when their machines are 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 few colorful things. Also remember that you will know your friends (and your enemies) better when you find out what colors they like and dislike. And don’t forget that anyone can guess a lot about you when you choose a piece of handkerchief.

67. 小题1:According to the passage, men’s 110-meter hurdles Olympic champion and world record holder Liu Xiang is most likely to love the color ______.

A．black

B．grey

C．green

D．brown68. 小题2:Why are machines painted orange in some factories, according to the passage?

A．Because workers tend to prefer orange to other colors.

B．Because other colors are forbidden in factories.

C．Because less accidents happen due to the introduction of orange machines.

D．Because orange machines are easier to clean.69. 小题3:Which of the following statements is Not true according to the passage?

A．It’s possible to cheer you up by enjoying some colorful pictures.

B．You can know your friends better through the color they like or dislike.

C．Some people are born with their colorful preference.

D．One’s color preference is always changeable.70. 小题4:The underlined word ‘depressing’ in Paragraph 2 probably means ‘______’.

A．discouraging

B．happy

C．surprising

D．brave

设置Windows桌面背景时，所选图形文件可采用的显示方式有：（）

A.居中

B.平铺

C.拉伸

D.最小化

Reporter：先生，谢谢您接受我的采访。您现在已经退休了，听说这个冬天您要回您的家乡去，能不能谈谈您的退休生活
The Artist: Of course. Upon my retirement, I made the decision to spend this winter back home in Norway. I have a house in a small village there, which is a two-hour flight from London, and then a two-hour car ride up into the mountains. It’s snowy landscape, vast and beautiful.
Reporter：我没有去过北欧，我想那儿的冬天一定很美，但是也一定很冷吧
The Artist: Yes, it can get to 30 degrees below zero there when it gets really cold. And the days are very short. It’s very chilly but it’s dry and there’s no wind and you have the northern lights and you have the stars. As long as you’re properly dressed, you don’t freeze at all.
Reporter：您对家乡有很深的感情。但您选择在伦敦安家，说明您是很喜欢伦敦的，对吗
The Artist: London is the most cosmopolitan and interesting town in the world. It has such a vast supply of culture. It’s so easy to live there. I used to spend time in London and I always felt very welcome as a foreigner. Now that my calendar is more flexible I want to live in London again. I have one child in Karachi and one in Sydney so London is easier to use as a family meeting place.
Reporter：请您和我们讲一讲您的童年生活。您是在哪长大的
The Artist: I grew up in a small mining town in the far north of Sweden. In the mid-1920s. they found a huge pile of gold and young people started to move there, including my parents. They went as teachers. Now the gold is gone and the village is growing old.
Reporter：您后来有没有故地重游，再去看看您以前生活过的小村子
The Artist: Yes, I have. In fact, my wife is from there too-I’m married to the most beautiful girl in the village-it’s like in a fantasy-and until two years ago, her father was still living there, so we went quite often.
Reporter：谢谢，希望您能再来北京。