古语云:“潮者,据朝来也;汐者,言夕至也。”能对这一自然现象作出科学解释的是 [

题型:选择题

问题:

古语云:“潮者,据朝来也 ;汐者,言夕至也。”能对这一自然现象作出科学解释的是  [ ]

A.伽利略的自由落体定律   

B.牛顿的经典力学体系

C.普朗克的量子理论   

D.爱因斯坦的相对论

考点:牛顿和经典力学(《自然哲学的数学原理》)
题型:选择题

London, May 5, 2003  Emma Richards of Britain has become the first woman and the youngest person to finish the Around Alone, which is a round-the-world sailing race. The journey started in New York last September and went east around South Africa to New Zealand. It crossed the Pacific Ocean and went around South America, ending up yesterday in Rhode Island, the smallest state in America. In the end, the trip covered over 46,000 kilometres. The same sea route was taken in the past by many famous travelers who wanted to learn about the world.

Emma, a 1996 graduate (毕业生) of the University of Glasgow, finished the race at the age of twenty-eight. The race requires competitors to sail alone. Emma said that actually it was very difficult to be all by herself for such a long time even though she’s really into sailing. Her worst moment was when she had to climb the high mast (船桅) in a bad storm to fix some broken parts. She sailed hundreds of kilometres away from land and the wind was blowing very hard. Only her strong willpower kept her going to make it all the way. These days, Emma is happy to be home with her parents and sleep in a bed that stays still.

小题1:The first paragraph is mostly about       .

A.the Around Alone race

B.a terrible wind storm

C.the start of the journey

D.the smallest state in America小题2:Which one is NOT true?

A.Emma sailed alone around the world.

B.Emma made a new route for the sea travel.

C.Emma is the youngest person to finish the race.

D.Emma is the first woman to finish Around Alone.小题3:The second paragraph mainly tells us about       .

A.Emma’s parents

B.how to repair a broken boat

C.the University of Glasgow

D.Emma’s sailing experience小题4:How long did the trip take?

A.About four months.

B.About six months.

C.About eight months.

D.About twelve months.小题5: What is the best way to explain Emma’s success?

A.The other racers had many problems.

B.Her parents encouraged her to keep on.

C.She had strong willpower to make it to the end.

D.She had received a good education in a university.

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人类mtDNA组成的特点是什么?

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对于草,你会有哪些思考?陶渊明用“种豆南山下,草盛豆苗稀”抒写草的散漫无羁,白居易用“乱花渐欲迷人眼,浅草才能没马蹄”表明草对姹紫嫣红开遍的向往,还用“野火烧不尽,春风吹又生”赞叹草生命力的顽强;岑参借用“北风卷地白草折,胡天八月即飞雪”明示草性坚韧,还有范晔用“疾风知劲草,岁寒见后凋”称誉草能历经考验。可是,谁也不能否认,草这种千姿百态的长势离不开深扎土壤的那茁长的根啊。

读了上面这段文字,你有何感想?请以“根壮与草美”为话题写一篇作文,可讲述你自己或身边的故事,抒发你的真情实感,也可以阐明你的思想观点。

[注意]①所写内容必须在话题范围之内。②立意自定,角度自选,题目自拟。③除诗歌外,文体不限。④不少于800个字。⑤不得抄袭。

题型:选择题

下图是某特大城市开发区社区居民不同购物行为空间差异图。读图回答下列问题。

小题1:居民倾向于到中心城区购买的商品是

A.食品

B.日常用品

C.服装

D.家用电器小题2:影响居民购买食品和日常用品空间倾向的主要因素是

A.出行距离

B.购物成本

C.交通方式

D.购物环境

题型:选择题

骨折后最易发生骨缺血性坏死的部位是()

A.股骨头

B.肱骨头

C.桡骨远端

D.锁骨远端

E.胫骨内踝

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