学习啦在线学习网托福阅读加试分为经典加试和非经典加试，一般情况下考生遇到的情况都是经典加试，即所加试的题目都是固定的几篇。这里小编为就为大家整理了托福阅读经典加试化石和岩石内容分享给大家，希望对大家托福备考有帮助。

托福阅读经典加试：化石和岩石

学习啦在线学习网关于一个叫 smith 的人，小的时候就喜欢收集石头,长大后开始研究岩石层，在采石场的工作，他有大量的机会去研究 rock and fossil，后来还提出了一套理论，

现 fossil 更能提供时间的准确信息，后来，他和另一个科学家发现动物的区系可以帮助确认化石的年代，说这些理论至今都还有用后来，有人认为植物的分科也可以用于化石和岩石的研究。

学习啦在线学习网一道词汇题 rudimentary=basic .

学习啦在线学习网托福阅读补充加试：植物defense system

1 生物学： 植物的defense system，以及科学家为证实 defense system对于 deter animal feeding on them有很大的用处。有一道题是，食草东西虽然吃他们的种子，却也帮助他们传播和繁殖。

托福阅读背景知识之肺部有味觉

学习啦在线学习网Take a deep breath. Taste anything? Actually, your lungs may. Because scientists have discovered that the same receptors that exist on the tongue to taste bitter substances are also found on the smooth muscle of the lungs.

Researchers were studying the receptors on smooth lung muscles that regulate contraction and relaxation of theairways. That’s when they made the discovery—which was so unexpected that the researchers themselves were skeptical.

学习啦在线学习网Finally, they became convinced that the receptors were really there, though not clustered in taste buds as they are on the tongue. The scientists then exposed human and mouse airways to various bitter compounds to gauge the effects.

Many toxic compounds are bitter, so the researchers expected the lung muscle to tense up and contract—to compel the breather to move away from whatever was bitter and perhaps toxic. But, in a second surprise, bitter compounds relaxed and opened airways better than any existing asthma drug. The study is in the journal Nature Medicine. "Bitter taste receptors on airway smooth muscle bronchodilate by localized calcium signaling and reverse obstruction".

Researchers will continue to search for the role of the receptors. Meanwhile, the work represents a surprising new lead in the search for drugs to treat asthma, emphysema or chronic bronchitis.—Cynthia Graber

托福阅读背景知识之给小费的文化

学习啦在线学习网It's every traveler's nightmare. The porter brings your bags to yourroom and helpfully explains how to access CNN. He shows you how to turn on thelights and adjust the air-conditioner. Then he points to the phone and says:"If there's anything else you need, just call." All this time, you'vebeen thinking one thing: "How much should I tip this guy?" Out ofdesperation you shove a few banknotes into his hand, hoping that you're neithergiven too much or too little.

对于每一位旅行者来说，这都像是一场噩梦。行李员把你的行李搬到房间，向你解释如何收看CNN，告诉你怎么开灯，怎麽把空调调好。然后他指着电话说：“如果你还需要什么，请打电话。”而你却一直在反复思考着一件事：“我到底该给这家伙多少小费?”最终，你近乎绝望地把几张钞票塞进他手里，心中暗暗希望你给的小费不多也不少。

It's difficult to divine what constitutes an appropriate tip in anycountry. In Japan, if you leave a couple of coins on the table, the waiter maychase after you to return your forgotten change. In New York, on the otherhand, if you leave less than 15%, your reservation might not hold up next time.Asia, with its multiplicity of cultures and customs, is a particularlydifficult terrain. To make your next trip a little easier, here's a guide totipping across the region:

知道在每一个国家该给多少小费并不容易。在日本，如果你在桌上留下几个硬币，侍应生会追着还给你留下的零钱。在纽约则恰恰相反。如果你给的小费少于消费额的15%，那么下次你预定的桌子可能就会被人占去。由于亚洲各国文化和风俗习惯差异较大，因此在这里给小费格外困难。为了让你下次旅行较为顺利，我们向你提供一些在这一地区给小费的窍门。

学习啦在线学习网Bangkok In general, the more Westernized the place is, the morelikely you'll be expected to leave a gratuity. Some top-end restaurants willadd a 10% service charge to the bill. If not, waiters will appreciate youtacking on the 10% yourself. However, if you're eating at a downscalerestaurant a tip is not necessary. If you're staying at one of Bangkok's manyfive-star establishments, expect to tip the porter 20 to 50 baht, depending onhow many bags you have. Taxis are now metered in Bangkok. Local custom is toround the fare up to the nearest five baht.

学习啦在线学习网曼谷总的说来，一个地方西化的程度越高，你就越有可能需要给小费。有些高级的饭店会在帐单里加收10%的服务费。如果没有的话，侍者会感激你自己附上那10%。不过，如果你在一家低档次的餐馆就餐，就没有必要给小费。如果你住在曼谷的某家五星级饭店，就请准备付给搬运工20到50铢，具体的数目得依你的行李多少而定。如今曼谷的出租车都打表计程，当地的惯例是把车费凑整到最近的五铢的倍数。

学习啦在线学习网Hong Kong Gratuity is customary in this money-mad metropolis. Mostrestaurants automatically add a 10% service charge to the bill, but thesurcharge often ends up in the pocket of the owner. If the service is good, addanother 10% to the bill, up to HK0 in an especially nice restaurant. ForHK hotel porters should do it at all but the nicest hotels where a new HKbill may be more acceptable. When in a taxi, round up to the nearest dollar.

香港在这个金钱至上的大都市里，给小费是司空见惯的。大多餐馆自动在帐单里加了10%的服务费，但这笔额外的收入最后却常常落到雇主手里。如果服务质量好的话，在帐单里再加上10%，而在一个极好的饭馆里，小费可以多达100港币。对于旅馆的搬运工来说，港币10元的小费已足够，不过在最好的一些饭店，20港币可能更受欢迎。坐出租车的话，凑够最近的整数给钱。

Jakarta Tipping is not part of local culture, but internationalinfluences have turned some Westernized palms upward in search of a few extrarupiah. A 10% service charge is added at most high-end restaurants. Atmoderately priced restaurants, 5,000 rupiah should do it. If the service issuperb, tack on an extra 1,000 or so. At hotels, porters ask for a few hundredrupiah for each bag. While most taxi drivers will automatically round up to thenext 500 rupiah.

雅加达给小费原本不是当地文化的一部分，但是国际性的影响使得一些西化的人们盼望多得一些钱。大多数高级饭店里已附加10%的服务费。在价格中等的饭店，给5,000卢比的小费就已足够——如果服务极好，也可以再多给大约l,000卢比。在旅馆，要让搬运工搬一件行李就得给几百卢比。大多数出租车司机会自动把收费加到最近的500卢比的整数。

学习啦在线学习网Kuala Lumpur Like Indonesia, tipping in Malaysia is confined to thepricier Westernized joints, which often add a 10% service charge to your mealor hotel room. If you are at a hotel restaurant, expect a 10% service charge.But at local restaurants, there's no need to add a gratuity. At five-starhotels, one or two ringgit will suffice a porter. At lower-end establishments,don't feel compelled to tip. Like Bangkok, many taxis are now metered, so youcan just round up to the nearest ringgit.

吉隆坡像在印度尼西亚—样，在马来西亚给小费也仅限于那些价格较高的西式场所。在那里，一般在就餐或旅馆房间的费用之外附加10%的服务费。如果你在饭店的餐厅就餐，也得准备给10%的服务费。但在当地的饭馆里，却没有必要附加小费。在五星级饭店，给搬运工一两个林吉特就足够了。在低档次的饭店，不一定非给小费不可。像曼谷一样，许多出租车都计程，所以只要凑足最近的整数就行。

Manila Tipping is common in Manila, and anything above 10% will gainyou undying loyalty. At restaurants, even if a service charge is included,custom dictates adding another 5%-10% to the bill. Hotel porters should berewarded with 20 pesos per bag. Most taxicabs are metered, and rounding up tothe next five pesos is a good rule of thumb.

学习啦在线学习网马尼拉在马尼拉给小费是很平常的事。只要付10%以上的服务费就能换宋忠心耿耿的服务。在餐馆里，即使就餐费用里已经包括服务费，按一般惯例，还得在帐单里再加上5%到10%。旅馆的搬运工每搬一件行李要给20个比索。大多数的出租车是打表计程的，把车费凑整到最近的五比索准保没错。

学习啦在线学习网Seoul Tipping is not part of Korean culture, although it has becomea matter of course in international hotels where a 10% service charge is oftenadded. If you are at a Korean barbecue joint, there's no need to add anythingextra. But a sleek Italian restaurant may require a 10% contribution. If youare at a top-end hotel, international standards apply, so expect to pay500-1,000 won per bag. Taxi drivers don't expect a tip. Keep the change foryourself.

学习啦在线学习网汉城给小费不是韩国文化的一部分，尽管在国际饭店里收取10%的服务费似乎是理所当然的一件事。如果你去一个吃韩国烧烤的地方，那么没有必要付额外的费用。但是在一个雅致的意大利餐馆就餐，可能就要多付10%的小费。如果你下榻的是最高级饭店，就要按国际规范行事。所以搬一件行李的小费大概是500到1,000韩元。不用给出租车司机小费，找的零钱你自己留着好了。

Singapore According to government mandate in the Lion City, tippingis not permitted. It's basically outlawed at Changi Airport and officialsencourage tourists not to add to the 10% service charge that many high-endhotels tack on to the bill. At restaurants, Singaporeans tend not to leavetips. Nicer restaurants do sometimes levy a 10% service charge. Hotel staff isthe one exception to the no-tipping rule. As a general guide, SSI should beadequate for baggage-lugging service. Taxi drivers don't expect gratuity, butthey won't refuse it.

新加坡根据狮城政府的规定，给小费是不允许的。在樟宜国际机场，这种行为基本上是违法的。官员们鼓励游客拒绝支付一些高级饭店附加在帐单上的 10%的服务费。在饭馆就餐时，新加坡人一般都不留小费。一些好的饭馆有时也以征税的形式收取10%的服务费。饭店员工是不收小费原则的唯一例外。一般的准则是，如有人帮你搬运行李，给一新元就够了。出租车司机是不指望拿小费的，但你要给他们，他们也不会拒绝。

学习啦在线学习网Taipei Like Japan and China, Taiwan is not a tipping society-eventhough much of the currency seems to come in coin form. Tipping is not expectedin restaurants. However, that rule is changing as American-style eateriesintroduce Western ways. Hotel staff won't be overly offended if you don't tip.Gratuity is not expected in taxicabs.

台北就像日本和中国大陆一样，台湾不是一个给小费的社会——尽管大量货币是以硬币的形式出现。饭馆里不用给小费。不过，随着一些美式餐馆引进西方做法，这一原则也在改变。饭店的员工如果没有得到你的小费的话，也不会觉得大受冒犯。坐出租车也不需要给小费。

托福阅读材料之GOOGLE的发展历程

Growth

While the primary business interest is in the web content arena, Google has begun experimenting with other markets, such as radio and print publications. On 17 January 2006, Google announced the purchase of a radio advertising company "dMarc", which provides an automated system that allows companies to advertise on the radio.This will allow Google to combine two niche advertising media—the Internet and radio—with Google's ability to laser-focus on the tastes of consumers. Google has also begun an experiment in selling advertisements from its advertisers in offline newspapers and magazines, with select advertisements in the Chicago Sun-Times.They have been filling unsold space in the newspaper that would have normally been used for in-house advertisements.

Acquisitions

Since 2001, Google has acquired several companies, mainly focusing on small start-ups.

学习啦在线学习网In 2004, Google acquired a company called Keyhole, Inc.,which developed a product called Earth Viewer, renamed in 2005 to Google Earth.

学习啦在线学习网In February 2006, software company Adaptive Path sold Measure Map, a weblog statistics application, to Google. Registration to the service has since been temporarily disabled. The last update regarding the future of Measure Map was made on 6 April 2006 and outlined many of the known issues of the service.

In late 2006, Google bought the online video site YouTube for class="main">