下列命题:①坐标平面内,点(a,b)与点(b,a)表示同一个点;②要了解一批电视

题型:选择题

问题:

下列命题:①坐标平面内,点(a,b)与点(b,a)表示同一个点;②要了解一批电视机的使用寿命,从中任意抽取40台电视机进行试验,在这个问题中,样本容量是40台电视机;③过一点有且只有一条直线与这条直线平行;④如果a<b,那么a c < b c;其中真命题有(    )

A.3个

B.2个

C.1个

D.0个

考点:平行四边形的性质平行四边形的判定矩形,矩形的性质,矩形的判定菱形,菱形的性质,菱形的判定
题型:选择题

RAP/HIP-HOP

Known for their quick speech, some rappers can say more than 700 syllables (音节) a minute! If you like rap/hip-hop, you are energetic and have a way with words. You put a fresh spin(旋转)on things, whether it’s new moves on the dance floor or your hip style.

CLASSLCAL

In the 18th century, classical musicians were like rock stars. Beethoven and Mozart, for example, played in crowded concert halls. If you like classical, you are open to new ideas and like arguing with friends. Creative and imaginative, you can easily spend many hours reading, writing or painting.

COUNTRY

Country music came from the folk songs of English settlers(移民) of the southeastern United States. If you like country, you say your opinions well, which makes you the ideal class president or team head. You enjoy spending time with your family.

POP

Pop music is designed to attract almost everyone, and it does. Each year, the industry brings in about 30 billion dollars! If you like pop, you are attractive to your friends. You can make big things happen, like planning for a huge party or leading your team to victory(胜利).

ROCK

In the 1950s, rock music created a new culture. If you like rock, you are a risk-taker who never accepts no for an answer. You rise to any challenge, like doing very well in a big exam or landing the lead in the school play.

If these personalities don’t match you, that’s OK. These are just for fun.

小题1:What does the underlined part “You put a fresh spin on things” mean in the passage?

A.You have the ability to attract others’ attention.

B.You are always willing to make new friends.

C.You are willing to say your thoughts to others all the time.

D.You can say your idea in a clever way that makes it seem better than it really is.小题2:If you like pop music,          .

A.you are traditional and prefer to stay with your family

B.you are easy to accept new ideas

C.you are welcome and your friends all like to be with you]

D.you have a quick speech and can say 30 words in a minute小题3:We can know from this passage that          .

A.in the 18th century, classical musicians were like pop stars

B.country music came from the old songs of the English

C.pop music is liked by the largest number of people in the world

D.everyone can find his personality in this passage小题4:What’s the main idea of the passage?

A.When music came into being.

B.How to like music.

C.Some basic information about music.

D.What your favorite music says about you.

题型:选择题

下列程序的运行结果是______。
#include<stdio.h>
main()
int a=10,b=3;
printf("%d,",a%B) ;
printf("%d,",(a-b,a+B) );
printf("%dLn",a-ba-b:a+B) ;

题型:选择题

据报道,月球上有大量3He存在,以下关于3He的说法正确的是(  )

A.是4He的同素异形体

B.比4He多一个中子

C.是4He的同位素

D.比4He少一个质子

题型:选择题

人一生偶有一至数次癫痫发作的机会高达()

A.3%

B.4%

C.8%

D.5%

E.10%

题型:选择题

下列哪些内容需要分别以书面形式一次性答复客户()。

A.供电方案

B.设计审查

C.中间检查结果

D.竣工检验结果

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