阅读理解: Wind is the great maker of waves．There are exceptions, such as the tidalwaves sometimes produced by earth-quakes under the sea．But the waves most of us know are produced by winds blowing over 题目和参考答案——青夏教育精英家教网—

阅读理解：

　　Wind is the great maker of waves．There are exceptions, such as the tidal(潮汐的)waves sometimes produced by earth-quakes under the sea．But the waves most of us know are produced by winds blowing over the sea．

　　Now before constructing an imaginary life history of a typical wave, we need to know certain physical things about it．A wave has height, from trough(low point)to crest(high point)．It has length-the distance from this crest to that of the following wave．The period of the wave means the time it takes for succeeding crests to pass a fixed point．None of these things stays the same-for all depend upon the wind, upon the depth of the water and many other matters．

　　The water that makes up a wave does not advance with it across the sea．Each drop of water turns around in a little circle with the passing of the wave, but returns very nearly to its original position．And it is fortunate that this is so．For if the huge masses of water that make up a wave actually moved across the sea, sailing would be impossible．

　　If we want to find the speed of a wave we may use the following way：

　　Speed＝wavelength X frequency

　　Here, wavelength is the distance between two high points(crests), frequency means the number of cycles per second．

(1)

What causes waves?
[　　]
A．	Earthquakes and nothing else．
B．	Only wind．
C．	Wind causes most waves．
D．	Wind causes some waves．

(2)

Which of the following is true according to the passage?
[　　]
A．	The water of a wave moves away across the sea．
B．	The water of a wave remains almost at the same place．
C．	The water of a wave goes with the passing of the wave．
D．	The length of a wave means the distance from the top of a wave to the bottom．

(3)

The speed of Wave 1 is 100 cm/s, frequency 10．The frequency of wave 2 is 300, while its speed is twice that of wave 1．Which of the following is right?
[　　]
A．	The wavelengths of the two are equal．
B．	The wavelength of Wave 1 is 10 times longer than that of Wave 2．
C．	The wavelength of Wave 2 is longer than that of Wave 1．
D．	The wavelength of Wave 1 is longer than that of Wave 2．

答案：1．C;2．B;3．D;
解析：

(1)	由第一段：“…waves sometimes produced by earthquakes…．But the waves most of us know are produced by winds…．”可知“wind causes most waves”是正确的。
(2)	第三段，…The water that makes up a wave does not advance with it across the sea…but returns very nearly to its original position．可判断A、C两项错，B项对，而D项也是错的，应是“…from this crest to that of following wave”。
(3)	根据公式：speed＝wavelength X frequency，可知wavelength＝speed÷frequency，所以可计算出wavelength of wave l＝100÷10＝10，wavelength of wave 2＝200÷300＝2/3，很明显，答案为D项。

练习册系列答案

年级	高中课程	年级	初中课程
高一	高一免费课程推荐！	初一	初一免费课程推荐！
高二	高二免费课程推荐！	初二	初二免费课程推荐！
高三	高三免费课程推荐！	初三	初三免费课程推荐！
更多初中、高中辅导课程推荐,点击进入>>

相关习题

科目：高中英语 来源：浙江省金华一中2012届高三10月月考英语试题 题型：050

阅读理解

　　BEIJING－Apple Inc is one step closer to beginning sales of iPad2 tablet computers with cellular(手机)network compatibility(兼容)for the first time in the Chinese mainland, where the consumer-electronics giant is in the midst of an aggressive expansion．

　　According to China’s Telecommunication Equipment Certification Center, a device by Apple with third-generation high-speed wireless data capabilities was issued the network access license needed for the company to begin official sales in China．The device, listed under model number “A1396”, is compatible with the 3G standard WCDMA, and would work with the cellular network operated by Apple’s local iPhone partner, China Unicom(Hong Kong)Ltd．

　　China Unicom declined(谢绝)to comment．

　　Apple already offers the 3G iPad2 in Hong Kong through its partners, but currently only offers Wi-Fi versions of the device in the Chinese mainland．Still, consumers in China, which according to research firm IDC surpassed(超过)the US as the world’s largest PC market in the second quarter, have been purchasing 3G tablets through unofficial channels．

　　Separately, Apple spokeswoman Carolyn Wu said Sept 6 that the company’s first Hong Kong store, set to open this quarter, will be located in the city’s central shopping and business district in the International Finance Center’s upscale(高档的)IFC mall, a commercial center and sightseeing spot along the city’s waterfront．Wu also said that Apple is planning a new store in Shanghai later this quarter, which will be its biggest store in China．She declined to give more details or to comment on the 3G iPad2．

　　Apple currently has four full-service Apple stores in the mainland, which receive the most traffic of any Apple stores in the world．The company otherwise relies on resellers to get its products into the market．

　　The new stores reflect Apple’s confidence in rising demand for its products such as smart phones and tablet computers．Sales in the Chinese mainland, Hong Kong and Taiwan helped boost(增长)the company’s third-quarter results, newly appointed Chief Executive Tim Cook said in July．China revenue(收益)surged(激增)six-fold to about ＄3.8 billion during the three months ended June 25．

　　“This has been a substantial(重大)opportunity for Apple and I firmly believe that we’re just scratching the surface right now,” Cook said at the time, referring to strong sales in China．“I see an incredible opportunity for Apple there．”

　　From China Daily 2011-09-08

(1)

According to the news, which of the following statements is true?
[　　]
A．	WCDMA is not the only 3G standard in the world．
B．	Apple Inc sells its products in the market of the Chinese mainland all by its own stores．
C．	The consumers in China can only get iPad2 of Wi-Fi versions．
D．	Chinese mainland is the second largest PC market in this year’s second quarter．

(2)

Which one of the following phrases can replace the underlined word in paragraph 1?
[　　]
A．	in the interests of
B．	in the front of
C．	in the process of
D．	in the case of

(3)

How many full-service Apple stores in China?
[　　]
A．	4．
B．	6．
C．	8．
D．	Unknown．

(4)

What’s the probable meaning of “six-fold” in the last but one paragraph?
[　　]
A．	one-sixth
B．	six times
C．	60 percent
D．	2times

(5)

By saying “we’re just scratching the surface right now”, Cook means _________．
[　　]
A．	they don’t know much about China’s market
B．	they will sell more products and gain more profit in China
C．	they need to obtain more permission from China’s government
D．	they ignored the rural market in China

查看答案和解析>>

科目：高中英语 来源：贵州省湄潭中学2012届高三第四次月考英语试题 题型：050

阅读理解

　　Attractions in Wisconsin

　　Wisconsin Historical Museum

　　30 N．Carroll Street on Madison’s Capitol Square

　　Discover Wisconsin’s history and culture(文化)on four floors of exhibits．Open for public program．Admission is free．

　　Open ：Tuesday through Saturday, 9∶00am－4∶00 pm．

　　(608)264-6555 www．wisconsinhistory．org/museum

　　Swiss historical village

　　612 Seventh Ave．, New Glarus

　　The Swiss Historical Village offers a delightful look at pioneer life in America’s heartland．14 buildings in the village give a full picture of every day life in the nineteenth-century Midwest．

　　Tue．－Fri．, May 1st－October 31st, 10∶00 am－4∶00 pm．Admission is ＄20．

　　(608)527-2317 www．swisshistoricalvillage．com

　　Artisan Gallery & Creamery Café

　　6858 Paoli Rd．, Paoli, WI

　　One of the largest collections of fine arts and crafts(手工艺品)in Wisconsin．Over 5000 sp．ft．of exhibition space in a historic creamery．While visiting enjoy a wonderfully prepared lunch at our café overlooking the Sugar River．Just minutes from Madison!

　　Gallery open Tue．–Sun．, 10∶00 am－5∶00 pm．

　　Café open：Wed．–Sat．, 11：00 am－3∶00 pm．

　　Sun．brunch with wine, 10∶00－3∶00 pm．

　　(608)845-6600 www．artisangal．com

　　Christopher Columbus Museum

　　239 Whitney St．, Columbus

　　World-class exhibit –2000 quality souvenirs(纪念品)marking Chicago’s 1893 World Columbian Exhibition．Tour buses are always welcome．

　　Open：daily, 8∶15 am－4∶00 pm．

　　(920)623-1992 www．columbusantiquemall．com

(1)

Which of the following is on Capitol Square?
[　　]
A．	Wisconsin Historical Museum．
B．	Swiss Historical Village．
C．	Artisan Gallery & Creamery Café．
D．	Christopher Columbus Museum．

(2)

Where can you go for a visit on Monday?
[　　]
A．	Wisconsin Historical Museum．
B．	Swiss Historical Village．
C．	Artisan Gallery & Creamery café．
D．	Christopher Columbus Museum．

(3)

Where can visitors have lunch?
[　　]
A．	At Wisconsin Historical Museum．
B．	At Swiss Historical Village．
C．	At Artisan Gallery & Creamery Café．
D．	At Christopher Columbus Museum．

(4)

We learn from the text that ________．
[　　]
A．	Swiss Historical Village is open for half a year
B．	Christopher Columbus Museum overlooks a river
C．	tickets are needed for Wisconsin Historical Museum
D．	Artisan Gallery & Creamery Café are open daily for 4 hours

查看答案和解析>>

科目：高中英语 来源：浙江省浙江大学附属中学2012届高三上学期期中考试英语试题 题型：050

阅读理解

　　According to China's Telecommunication Equipment Certification Center, a device by Apple with third-generation high-speed wireless data capabilities was issued the network access license needed for the company to begin official sales in China．The device, listed under model number “A1396”, is compatible(相容的)with the 3G standard WCDMA, and would work with the cellular network operated by Apple's local iPhone partner, China Unicom(Hong Kong)Ltd．

　　China Unicom declined(谢绝)to comment．

　　Apple already offers the 3G iPad2 in Hong Kong through its partners, but currently only offers Wi-Fi versions of the device in the Chinese mainland．Still, consumers in China, which according to research firm IDC surpassed(超过)the US as the world's largest PC market in the second quarter, have been purchasing 3G tablets through unofficial channels．

　　Separately, Apple spokeswoman Carolyn Wu said Sept 6 that the company's first Hong Kong store, set to open this quarter, will be located in the city's central shopping and business district in the International Finance Center's upscale(高档的)IFC mall, a commercial center and sightseeing spot along the city's waterfront．Wu also said that Apple is planning a new store in Shanghai later this quarter, which will be its biggest store in China．She declined to give more details or to comment on the 3G iPad2．

　　The new stores reflect Apple's confidence in rising demand for its products such as smart phones and tablet computers．Sales in the Chinese mainland, Hong Kong and Taiwan helped boost(增长)the company's third-quarter results, newly appointed Chief Executive Tim Cook said in July．China revenue(收益)surged(激增)six-fold to about ＄3.8 billion during the three months ended June 25．

　　“This has been a substantial(重大)opportunity for Apple and I firmly believe that we're just scratching the surface right now,” Cook said at the time, referring to strong sales in China．“I see an incredible opportunity for Apple there．”

From China Daily 2011-09-08

(1)

According to the news, which of the following statements is true?
[　　]
A．	WCDMA is not the only 3G standard in the world．
B．	Apple Inc sells its products in the market of the Chinese mainland all by its own stores．
C．	The consumers in China can only get iPad2 of Wi-Fi versions．
D．	Chinese mainland is the second largest PC market in this year's second quarter．

(2)

Which one of the following phrases can replace the underlined word in paragraph 1?
[　　]
A．	in the interests of
B．	in the front of
C．	in the process of
D．	in the case of

(3)

How many full-service Apple stores in China?
[　　]
A．	4．
B．	6．
C．	8．
D．	Unknown．

(4)

What's the probable meaning of “six-fold” in the last but one paragraph?
[　　]
A．	one-sixth
B．	six times
C．	60 percent
D．	2⁶times

(5)

By saying “we're just scratching the surface right now”, Cook means ________．
[　　]
A．	they don't know much about China's market
B．	they will sell more products and gain more profit in China
C．	they need to obtain more permission from China's government
D．	they ignored the rural market in China

查看答案和解析>>

科目：高中英语 来源：浙江省浙大附中2012届高三上学期期中考试英语试题 题型：050

阅读理解

　　According to China’s Telecommunication Equipment Certification Center, a device by Apple with third-generation high-speed wireless data capabilities was issued the network access license needed for the company to begin official sales in China．The device, listed under model number “A1396”, is compatible(相容的)with the 3G standard WCDMA, and would work with the cellular network operated by Apple’s local iPhone partner, China Unicom(Hong Kong)Ltd．

　　China Unicom declined(谢绝)to comment．

　　The new stores reflect Apple’s confidence in rising demand for its products such as smart phones and tablet computers．Sales in the Chinese mainland, Hong Kong and Taiwan helped boost(增长)the company’s third-quarter results, newly appointed Chief Executive Tim Cook said in July．China revenue(收益)surged(激增)six-fold to about ＄3．8 billion during the three months ended June 25．

　　From China Daily 2011-09-08

(1)

According to the news, which of the following statements is true?
[　　]
A．	WCDMA is not the only 3G standard in the world．
B．	Apple Inc sells its products in the market of the Chinese mainland all by its own stores．
C．	The consumers in China can only get iPad2 of Wi-Fi versions．
D．	Chinese mainland is the second largest PC market in this year’s second quarter．

(2)

Which one of the following phrases can replace the underlined word in paragraph 1?
[　　]
A．	in the interests of
B．	in the front of
C．	in the process of
D．	in the case of

(3)

How many full-service Apple stores in China?
[　　]
A．	4．
B．	6．
C．	8．
D．	Unknown．

(4)

What’s the probable meaning of “six-fold” in the last but one paragraph?
[　　]
A．	one-sixth
B．	six times
C．	60 percent
D．	2⁶times

(5)

By saying “we’re just scratching the surface right now”, Cook means _________．
[　　]
A．	they don’t know much about China’s market
B．	they will sell more products and gain more profit in China
C．	they need to obtain more permission from China’s government
D．	they ignored the rural market in China

查看答案和解析>>

科目：高中英语 来源：2012年普通高等学校招生全国统一考试山东卷英语 题型：050

阅读理解

　　For those who are tired doing the laundry, Samsung has found an answer：a washing machine that can tell you when your laundry is done via a smartphone app(application)．

　　Strange though it may seem-“my wife already does that” was a common response among attendees viewing the device when it was introduced at the Consumer Electronics Show(CES)this week-Samsung is just one of many appliance makers racing to install(安装)a large number of internet-connected features in machines in an effort to make them “smart”．

　　Last year, it was a refrigerator that tweeted．This year, it's Wi-Fi-enabled laundry machines and fridges that can tell you when your groceries are going bad．

　　The washers and dryers, available starting in the spring, connect to any smartphone through a downloadable application．The phone can then be used as a remote control, so the machines can be turned on and off while their owners is at work or on the bus．

　　Samsung says it's not just something new-the app connection actually has some practical uses．

　　“If you started to dry clothes in the morning and forgot to take them out, you can go to your phone and restart your dryer for the time when come home, so your clothes are refreshed and ready to go,” said spokesperson Amy Schmidt．

　　The company also says that with electricity rate(电价)varying depending on the time of day, more control over when the machines are used can help save money．

　　Perhaps, but what they will probably really accomplish is what all good technologies do-enable laziness．Rather than getting up to check on whether the laundry is done, users will instead monitor it on their phones while watching TV．

(1)

What can be inferred from the common response of the attendees at the CES?
[　　]
A．	The machine will be a big success．
B．	their wives like doing the laundry．
C．	The machine is unrelated to their life．
D．	This kind of technology is familiar to them．

(2)

What can we learn about the new laundry machines?
[　　]
A．	They can tell you when your clothes need washing
B．	They can be controlled with a smartphone
C．	They are difficult to operate
D．	They are sold at a low price

(3)

We can conclude form Samsung's statements that ________．
[　　]
A．	the app connection makes life easier
B．	it is better to dry clothes in the morning
C．	smartphone can shorten the drying time
D．	we should refresh clothes back at home

(4)

What is the main idea of the last paragraph?
[　　]
A．	The laundry should be frequently checked
B．	Lazy people like using such machines
C．	Good technologies also cause problems
D．	Television may help do the laundry．

查看答案和解析>>

同步练习册答案

练习册

高中

初中

小学