题干

人们常说的“油比水轻”,实际上是说(    )


A:油比水体积大

B:油比水体积小

C:油比水质量大

D:油比水密度小

上一题 下一题 0.0难度 选择题 更新时间:2014-09-26 07:21:48

答案(点此获取答案解析)

D

同类题1

        Millions of people all over the world use the word OK. In fact, some people say the word is used more often than any other word in the world. OK means all right or acceptable. It expresses agreement or approval.

        ____ Some people say it came from the Native American Indian tribe known as the Choctaw(乔克托语). The Choctaw word “okeh” means the same as the American word “okay”. Experts say early explorers in the American West spoke the Choctaw language in the nineteenth century.

        But many people doubt this. Language expert Allen Walker Read wrote about the word “OK” in reports published in the 1960s. He said the word began being used in the 1830s. ____ Some foreign­born people wrote “all correct” as “o­l­l­k­o­r­r­e­c­t”, and used the letters OK. Other people say a railroad worker named Obadiah Kelly invented the word long ago. They say he put the first letters of his name—O and K—on each object people gave him to send on the train.

        ____ The organization supported Martin Van Buren for president in 1840. They called their group the OK club. The letters were taken from the name of the town where Martin was born—Old Kinderhook, New York.

        Then there is the expression A­OK. It is a space­age expression. It was used in 1961 during the flight of astronaut Alan Shepard. He was the first American to be launched into space. His flight ended when his spacecraft landed in the ocean, as planned. Shepard reported, “Everything is A ­OK.” ____ One story says it was first used during the early days of the telephone to tell an operator that a message had been received.

        There are also funny ways to say okay. ____ These expressions were first used in the 1930s. Today, a character on the American television series The Simpsons says it another way. He says okely­doke.

A.Some people say okey­dokey or okey­doke.

B.Still others say a political organization invented the word.

C.Therefore, it has become popular in that area from then on.

D.But many experts don't agree on what the expression means.

E.Still, language experts do not agree about where the word came from.

F.It was a short way of writing a different spelling of the word “all correct”.

G.However, some experts say the expression did not begin with the space age.

同类题2

阅读短文《会跳舞的向日葵》,完成下列小题。

       ①温暖的童年的家令我永远怀恋,家里有爸妈,两个弟弟,我特别想说说爸爸和我的故事。

       ②每个小孩都会惹出无数麻烦,我想我能够平平安安地成长成材真是不容易。我曾经非常淘气。记得当时家里住在一楼,有门有窗,但是爸妈上班去了,我就定一个规定,不准从门进出,还把门锁死了,我和弟弟进出都是走窗户,也不是好好地爬出爬进,窗户底下用各种席子卷起来,做成地道,还有陷阱。爸爸知道后对我们“抓大放小”,说小孩都贪玩,只要我们安全,相互友爱,诚实,其他的就包容了。

       ③我从认字起,爸爸就给我买书刊,我关注的第一本文学书是爸爸在阅读的《红岩》,当时书名上的字我还识不全,就念成了“红山石”,别人都笑了,而爸爸微笑着说:“她聪明,大概的意思并没有错。”后来我阅读了一些书,爸爸问我书里的情景,我都乐于叙述事件,描绘人事,从来不会串起来,也从来没有表达不清的时候,爸爸总是欣喜地倾听着,然后说:“不错。”

       ④有一阵我爱看有关公主的书,童话和民间故事都爱,只要里面提到公主。有一次,我忽然想造一座临时宫殿,在里面扮成公主。这种事没法在家里做,因为弟弟们会打岔和捣乱,我和同样想做公主的同学去我家楼上的小伙伴家,在大房间中划出一块,作为宫殿的一隅,把阳台上的花一盆一盆搬进来,给公主赏花用,又把高背的椅子列成两队,给公主的侍女们坐,然后在床上布置楼台亭阁。床显得太高,于是又搬木方子搭台阶。其实已经弄得初具规模了,又想布置个荷花池,这样才多几分雅趣。千辛万苦搬来大木盆,往里放上塑胶荷叶,浇上两大桶水时,突然发现木盆漏水了,顷刻之间,水漫开来。房间里全浸了水,走路能踩出水花。我突发奇想,说干脆多放些水,做个龙宫内的公主。为了这宏大的目标,我们一桶一桶往里提水,可水始终积不起来,像有个吞水怪似的。正在纳闷,就听楼下的弟弟们狂呼起来,原来,水全渗下楼去,我们家闹起了水灾。即使这样,爸爸也只是封我为“捣蛋公主”,并没有多说什么,他还继续给我买好看的公主书。

       ⑤刚进小学时,我曾很抗拒学校,觉得老师太严厉了,我喜欢无拘无束的自在生活,所以常常从学校偷跑出来,到我家窗户下面的花园里鼓捣一些别的事,比如舀一勺蜂蜜洒在地上,聚集起几百上千只蚂蚁,然后全部圈养起来。爸爸劝我回归学校,把那些蚂蚁都放了,说那样它们高兴。他把这件事处理得轻描淡写。

       ⑥后来又有麻烦了,有一次我看到窗底下种的向日葵会跳舞——每当太阳升起的时候它真的会摇摆。我把这个发现告诉同学时,他们不仅不相信,还说我说谎,因为他们没有看到向日葵跳舞。见同学都不理解我,我找不到认同感,又不愿意去学校。一天、两天不去以后第三天就更不愿意去了,决定逃学。

       ⑦爸爸要我去学校,可我特别要面子,害怕去学校被同学嘲笑。爸爸让我一定要面对这个难关。为了鼓励我重返学校,他想了一个办法,给我准备了两种糖,一种是给不为难我的同学吃的,还有一种是给问我为什么不来上课的同学吃的。比如有同学问我:“你怎么不来上课呀?”我就给他一颗糖说:“请吃糖吧。”如果他还继续问,我就再说,“请吃糖吧”,又往对方嘴里塞一颗糖。这个办法很管用,我发现同学们问了几次后,就不再追问了。后来他们甚至忘记我这个不好的“前科”。我用这个办法融入班级后,变得非常珍惜失而复得的学校生活,终于成为品学兼优的学生。

       ⑧爸爸这种鼓励和温和宽容的方式是适合孩子的,在成长过程中,孩子实际上是“无所不能”的。我庆幸有个有太阳味的童年