如图,滚摆在运动过程中,滚摆上升高度一次比一次(选填“低”或 “高”),这是因为

题型:实验题

问题:

如图,滚摆在运动过程中,滚摆上升高度一次比一次              (选填“低”或 “高”),这是因为                                         。若把悬挂滚摆的细线换成有弹性的钢丝,同样做实验,滚摆上升高度会比原来高还是低呢?                ,其理由是:                                              

考点:机械能与其他形式能量的转化
题型:实验题

     Hi! My name is Johnson. You can call① me John. I'm thirteen. I'm in Class One, Grade One, Lin'an

High School.

     We have 23 girls and 27 boys in our class. I'm from the U.S.A. Our English teacher is Miss Li. She

is from Shanghai. She is 21. She is a good teacher. She can speak both English and Chinese very well.

I can't speak Chinese very well. I can speak only a little Chinese. She often helps me with my Chinese.

We like her very much.

     I have a good friend here. His name is Tom. He's an English boy. He's thirteen, too. The classmates

are very kind② to me. We help each other. Now I have ten good friends.Notes:

     ①call v. 称呼,叫

     ②kind adj. 友好的

阅读短文,判断正(T)误(F)。

( ) 1. John is a Chinese student.

( )2. They have 50 students in his class.

( ) 3. John’s English teacher is from England.

( ) 4. Tom is John’s good friend.

( ) 5. John can speak only a little Chinese.

题型:实验题
函数f(x)=x+
1
x
在区间[
1
2
,3]上的最小值为m,最大值为n,则m+3n=______.
题型:实验题

科学知识与生产生活联系紧密.下列物质用途错误的是(  )

选项ABCD
物质氯化钠二氧化碳浓硫酸氧气
用途除铁锈用于灭火作干燥剂供给呼吸

A.A

B.B

C.C

D.D

题型:实验题
 Beware of those who use the truth to deceive(欺骗). When someone tells you something that is  , but leaves out important information that should be  , he can create a false impression.
For example, someone might say, “I just  a hundred dollars on the lottery. It was great. I took that dollar ticket back to the store and  it in for one hundred dollars!”
This guy is a winner,   ? Maybe, maybe not. We then discover that he bought two hundred  , and only one was a winner. He’s really a big  !
He didn’t say anything that was  , but he deliberately left out some important  . That’s called a half-truth. Half-truths are not technically  , but they are just as not  .
Untrustworthy candidates in  campaigns often use this tactic(手段). Let’s say that during Governor Smith’s last term, the state lost one million jobs and  three million jobs. Then she  another term. One of her opponents runs an ad  , “During Governor Smith’s term, the state lost one million jobs!”That’s true.   , an honest statement would have been, “During Governor Smith’s term, the state had a net gain of  million jobs. ”
Advertisers will sometimes use half-truths. It’s  the law to make false claims so they try to mislead you with the  . An ad might boast, “Nine out of ten doctors recommend Yucky Pills to cure nose pimples. ”It  to mention that they only asked ten doctors and nine of them work for the Yucky Corporation.
This kind of deception happens too often. It’s a sad fact of life: Lies are lies, and sometimes the truth can lie as well.
小题1:
A.falseB.true
C.interestingD.boring
小题2:
A.includedB.contained
C.ignoredD.referred
小题3:
A.lostB.found
C.donatedD.won
小题4:
A.changed B.took
C.turnedD.made
小题5:
A.rightB.wellC.reallyD.though
小题6:
A.booksB.papers
C.ticketsD.balls
小题7:
A.winnerB.loser
C.fighterD.thinker
小题8:
A.trueB.real
C.doubtful D.false
小题9:
A.details B.information
C.mistakes D.errors
小题10:
A.storiesB.truth
C.messages D.lies
小题11:
A.pleasantB.exciting
C.honestD.clever
小题12:
A.politicalB.commercial
C.personal D.public
小题13:
A.stoppedB.found
C.avoidedD.gained
小题14:
A.seeksB.gets
C.achieves D.searches
小题15:
A.writingB.telling
C.sayingD.speaking
小题16:
A.OtherwiseB.However
C.MeanwhileD.Because
小题17:
A.oneB.twoC.threeD.four
小题18:
A.forB.to
C.againstD.in
小题19:
A.wordsB.facts
C.data D.truth
小题20:
A.failsB.tries
C.managesD.plans
题型:实验题

五、根据下图回答下列问题。

请仔细观察下图,左侧Y轴表示各专业招聘人数与求职人数的总数,右侧Y轴表示各专业职位供需比。

机械专业的招聘人数约是金融专业招聘人数的( )

A.一半

B.1.5倍

C.2倍

D.3倍

更多题库