考研英語閱讀理解精讀100篇【信息技術(shù)類】

考研英語閱讀理解精讀100篇unit38
Unit 38
Bragging about your fancy new cell phone is a fleeting pleasure; after all, today's coolest models tend to be next month's paperweights. By contrast, the half-life of a cordless phone for the home is measured in years. So if you really want to be ahead of the tech curve, forget the cell-phone wars and check out the new 5.8-GHz cordless phones.
 
Named after the frequency of the radio wave (measured in billions of cycles per second) that carries the signal between the handset and the base station, 5.8-GHz phones promise more clarity because there are fewer devices that operate on the same frequency and thus fewer to cause interference. If you have a cordless phone that is a couple of years old or even a new one that costs less than $50, chances are it is a 900-MHz model that is highly susceptible to static or buzzing from baby monitors, wireless speaker systems and your neighbors' 900-MHz phones. The newer 2.4-GHz units, introduced as an improvement over the 900-MHz models, do get less static, but wireless home networks and microwave ovens can still trigger a snap-crackle-pop effect. Not so the 5.8 GHz. So far, only a few companies sell the new models, and they don't come cheap. Uniden's TRU5865 costs $149, while the Vtech 5831 is $179. I preferred the Uniden because it was static free both inside my apartment and up to a block away. Its compact design hides the antenna inside the handset, and the glowing orange keys and display look sharp. The VTech got equally clear reception indoors, but I could stray only a few buildings down the block before buzzing set in.
 
But is it really worth an extra $100 (or more) to step up to 5.8 GHz? Maybe. When I tried out the Panasonic KX-TC1481B, a $39 900-MHz model, I could hear other conversations and even music coming through the phone. I got much clearer reception with the Motorola MA351, a $60 2.4-GHz model--except when I turned on my microwave oven and was assaulted by weird vibrating noises coming through the handset. Still, the Motorola is a decent option at a fair price.
 
No matter which kind of phone you're considering, a few other factors are worth keeping in mind. First, ask about battery life. While I liked the reception best on the Uniden, for example, it can go only four hours between charges vs. eight on the Vtech.
 
Next, find out if the phone is analog or digital. Both 5.8-MHz phones are digital, but that's not always the case with the models that use other frequencies, and this makes them an easier target for eavesdroppers. The best digitals use digital spread-spectrum (DDS) technology, which sends the signal down a broad range of frequencies to ensure that it gets through.
 
Finally, shop at a store that offers a money-back guarantee. That way you can torture test the phone for a few days. Then, once you're certain everything's O.K., go ahead and start bragging about it to all your friends.
 
注（1）：本文選自Time; 12/2/2002, p104, 3/4p, 3c；
注（2）：本文習(xí)題命題模仿對象2004年真題Text 1；
1.       How does the author introduce the topic?
 
[A]Explaining a phenomenon.
[B]Justifying an assumption.
[C]Posing a contrast.
[D]Making a comparison.
 
2.       Which of the following can be an advantage of Vtech over Uniden?
 
[A]A longer battery life.
[B]Free of static interference.
[C]Fashionable outlook.
[D]Compact design.
 
3.       The expression “susceptible to”(Line 5, Paragraph 2) most probably means __________.
 
[A]relevant with
[B]adaptable to
[C]immune from
[D]sensitive to
 
4.       What is the most distinctive feature of 5.8-GHz phones?
 
[A]Fairer price.
[B]Higher clarity.
[C]More attractive model.
[D]No easier target for eavesdroppers.
 
5.       Which of the following is true according to the text?
 
[A]It is worthwhile to buy any of 5.8-GHz phones.
[B]Battery life determines your selection of the phone.
[C]The earlier you bought the phone, the more static interference you got.
[D]5.8-GHz phones are becoming popular with consumers.
 
答案：CADBC
 
篇章剖析
本文是一篇說明文，詳細(xì)介紹了新一代無繩電話的性能以及購買時(shí)應(yīng)注意的事項(xiàng)。第一段指出無繩電話比手機(jī)的實(shí)用性強(qiáng)；第二段指出新一代無繩電話比以前的無繩電話產(chǎn)品的清晰度以及抗靜電干擾性要強(qiáng)的多，并且對兩款新一代無繩電話產(chǎn)品進(jìn)行了比較；第三段指出值得購買新一代產(chǎn)品；第四段、五段和六段指出如何進(jìn)行產(chǎn)品挑選。
 
詞匯注釋
cordless[5kC:dlIs]adj.不用電線的
chic[Fi:k,FIk]n.別致的款式(尤指婦女的服飾)
eliminate[]vt.排除, 消除
static[]adj.靜態(tài)的, 靜力的; n. 靜電噪聲 
brag[]v.吹牛
cell phone  n.手機(jī)
fleeting  adj.飛逝的；短暫的
paperweight[]n.紙鎮(zhèn), 書鎮(zhèn)
half-life  n.（事物衰落前的）使用（或流行）期
curve[]n.曲線, 彎曲, [棒球]曲線球, [統(tǒng)]曲線圖表
check out  v.付帳后離開, ,檢驗(yàn), 合格, 及格
gHz  abbr. gigahertz千兆赫茲
handset[]n.電話聽筒, 手機(jī), 手持機(jī)
base station  n.基地臺
MHZ  兆赫(茲)
susceptible[]adj.易受影響的, 易感動的, 容許...的
buzz[]v.作嗡嗡聲, 嗡嗡作響, 逼近
trigger[]vt.引發(fā), 引起, 觸發(fā)
compact[]adj.緊湊的, 緊密的, 簡潔的
stray[]v.迷路, 偏離
set in  v.開始, 到來, 上漲, 插入, 嵌入，開始, 漲潮
step up to  接進(jìn), 走進(jìn)
assault[]v.襲擊
analog[]n.類似物, 相似體
eavesdropper[ ]n.偷聽者
money-back  adj.（消費(fèi)者如對所購產(chǎn)品不滿）有權(quán)獲得退款的
torture[]v.破壞性試驗(yàn)
 
難句突破
If you have a cordless phone that is a couple of years old or even a new one that costs less than $50, chances are it is a 900-MHz model that is highly susceptible to static or buzzing from baby monitors, wireless speaker systems and your neighbors' 900-MHz phones.
主體句式：chances are …
結(jié)構(gòu)分析：本句是一個(gè)條件從句。在從句中，兩個(gè)that引導(dǎo)的都是定語從句，分別修飾phone 和a new one，其中one指代的也是phone；主句句形是chances are，這是一個(gè)固定用法，意思是it is most probable；主句中that引導(dǎo)的是定語從句，其中susceptible to的意思是“易受影響的”。
句子譯文：如果你家的無繩電話是你兩、三年前購買的，或者是你花了不超過50美元的價(jià)格新買的，那么你這部電話很可能是900兆赫的。這款電話極易受靜電的干擾，嬰兒監(jiān)控器、無線揚(yáng)聲器系統(tǒng)以及鄰居家的900兆赫款電話都能使它發(fā)出嗡嗡聲。
 
題目分析
1.       答案為C，屬事實(shí)細(xì)節(jié)題。文章開頭就手機(jī)和無繩電話的實(shí)用性進(jìn)行了對比，意在指出
無繩電話的實(shí)用性較強(qiáng)。
2. 答案為A，屬事實(shí)細(xì)節(jié)題。原文對應(yīng)信息是“While I liked the reception best on the Uniden, for example, it can go only four hours between charges vs. eight on the Vtech.”。選項(xiàng)B是這兩種無線電話的共同特征；選項(xiàng)C和D是Uniden的特征。
3. 答案為D，屬猜詞題。在文章第二段，作者就5,800兆赫無繩電話和以前的無繩電話產(chǎn)品在抗干擾性能進(jìn)行了對比。5,800兆赫無繩電話幾乎不受靜電干擾的影響，而以前的產(chǎn)品則不同，由此可猜出詞義。
4. 答案為B，屬事實(shí)細(xì)節(jié)題。原文對應(yīng)信息是第二段“5.8-GHz phones promise more clarity”。
5. 答案為C，屬事實(shí)細(xì)節(jié)題。本題的關(guān)鍵是對句子“If you have a cordless phone that is a couple of years old or even a new one that costs less than $50, chances are it is a 900-MHz model that is highly susceptible to static or buzzing from baby monitors, wireless speaker systems and your neighbors' 900-MHz phones.”的理解。詳細(xì)解釋參見難句突破部分。
 
參考譯文
炫耀你的新款手機(jī)如何的神奇只是瞬間的快樂，因?yàn)榻裉熳羁岬臋C(jī)型到下個(gè)月就只能拿它當(dāng)鎮(zhèn)紙用了。相反，家用無繩電話的使用期卻是有些年頭的。所以如果你真想走在科技發(fā)展的前沿，那么就請你忘掉手機(jī)大戰(zhàn)，去試試新款5,800兆赫無繩電話吧。
 
這款5,800兆赫電話是以在電話聽筒和基地臺之間傳遞著信號的無線電波（每秒幾十億赫）頻率來命名的。這款電話之所以能保證其音質(zhì)更為清晰，原因在于幾乎不存在其它同頻率運(yùn)轉(zhuǎn)的設(shè)備，因此造成的干擾也就幾乎不存在。如果你家的無繩電話是你兩、三年前購買的，或者是你花了不超過50美元的價(jià)格新買的，那么你這部電話很可能是900兆赫的。這款電話極易受靜電的干擾，嬰兒監(jiān)控器、無線揚(yáng)聲器系統(tǒng)以及鄰居家的900兆赫款電話都能使它發(fā)出嗡嗡聲。2，400兆赫機(jī)型被推薦為900兆赫機(jī)型的改良款，它的確能減少靜電干擾，但是家庭無線網(wǎng)絡(luò)和微波爐還是無法避免對其產(chǎn)生噼里啪啦的干擾作用。但是這款5,800兆赫電話不會出現(xiàn)這種情況。迄今為止，僅有幾家公司銷售新機(jī)型，而且售價(jià)不菲。友利電TRU5865型售價(jià)149美元，偉易達(dá)5831款是179美元。我偏愛友利電電話是因?yàn)闊o論在室內(nèi)還是在一個(gè)街區(qū)之外，它都不受靜電的干擾。小巧的外形設(shè)計(jì)把天線置于聽筒內(nèi)，色彩鮮明的橙色按鍵和顯示器看起來非常時(shí)髦。偉易達(dá)電話的室內(nèi)接收效果也同樣清楚，但是我沿街區(qū)剛走了幾幢樓它就開始有嗡嗡聲了。
 
真的很值得你多花100美元（或更多）去購買5,800兆赫電話嗎？或許還真值。當(dāng)我試用松下售價(jià)39美元的900兆赫KX-TC1481B款無繩電話時(shí)，我能聽到別人的對話，甚至還有音樂通過聽筒傳過來。摩托羅拉售價(jià)60美元的2,400兆赫MA351款無繩電話接聽效果還要更清楚一些——當(dāng)然除了我打開微波爐受到從聽筒里傳來的奇怪的震動噪音沖擊的時(shí)候。盡管如此，摩托羅拉價(jià)格公道，算是個(gè)不錯(cuò)的選擇。
 
不管你在考慮購買哪一款電話，你都應(yīng)該謹(jǐn)記其它幾個(gè)方面的因素。首先，詢問電池的壽命。比如說，雖然我喜歡友利電的接聽效果，但相對于偉易達(dá)8小時(shí)的電池使用時(shí)間，它的使用時(shí)間僅為4小時(shí)。
 
其次，看是模擬機(jī)還是數(shù)字機(jī)。兩個(gè)品牌的5，800兆赫電話都是數(shù)字的。但是使用其它頻率的話機(jī)通常不是這樣的，這就使這些話機(jī)更容易成為偷聽者的目標(biāo)。最好的數(shù)字話機(jī)使用的是擴(kuò)展頻譜（DDS）技術(shù)，這種技術(shù)能夠使信號在更廣的頻率范圍內(nèi)發(fā)送，這樣能保證信號成功發(fā)送。
 
最后，要在提供有退款保證的商店購買。這樣你就能做幾天的破壞性試驗(yàn)。一旦你能確定這部電話各方面性能都不錯(cuò)，那么你就去跟所有的朋友炫耀去吧。

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