Section (A)
How to Prepare for Earthquakes
Ideally, people would like to know when an earthquake is going to happen and how bad it will be. In both Japan and China, people have long believed that earthquakes can be forecast. In Japan, scientists have wired the Earth and sea to detect movements. The Chinese have traditionally watched animals and plants for warning signs of earthquakes. For example, the Chinese have noted that before an earthquake, hens' behavior changes — they refuse to enter their cages at night. They have also noticed that snakes come out of the ground to freeze to death and that dogs bark a lot, even normally quiet dogs.
Before the Hanshin earthquake in Japan, there were reports of large schools of fish swimming near the surface of the water. Certain birds, like pigeons, also seemed to be especially noisy, and were reported to be flying in unusual patterns before the earthquake. Perhaps most interesting, and most easily measured, is a chemical change in ground water before a quake. Experimental data seem to indicate that the amount of radon (Rn) in the water under the surface of the Earth waxes before an earthquake.
People would also like to be able to prevent the great destruction of property caused by earthquakes.After all, most of the people who die in earthquakes are killed by falling buildings. Therefore, building structures that can withstand the power of earthquakes is a major concern. Steel seems to be the best material, but not if it is welded to form a rigid structure. Many new structures are built with a new type of steel joint, an I-joint, which appears to be the most durable type of joint.
These joints of steel can move without breaking. Also, to prevent property damage, architects now design buildings so that the building's columns and horizontal beams are of equal strength, and vertical support columns are inserted deep into solid soil. In addition, many new houses have relatively light roofs and strong walls.
Concrete pillars for highway bridges that previously only had steel rods inside are now enclosed in steel.Besides working to improve building structures, people in areas where earthquakes are common need to prepare for the possibility of a great earthquake. They should regularly check and reinforce their homes, place heavy objects in low positions, attach cupboards and cabinets to walls, and fasten doors so that they will not open accidentally during an earthquake.
In addition to preparing their houses, people in these regions need to prepare themselves. They should have supplies of water and food at home and at work. It is best to store several gallons of water per person. It is also important to have something that can clean water and kill bacteria, so water from other sources can be made safe to drink.
Store one week's food for each person. Earthquake survival supplies include a radio receiver, a torch, extra batteries, first-aid supplies, a spade, a tent, some rope,and warm clothing. Experts also suggest the following:Keep a fire extinguisher handy. You should have one at home, at work, and in your car (if you have one). The fire extinguisher should be able to put out any type of fire.
Have the proper tools to turn off gas and water lines if necessary. Arrange an auxiliary cooking and heating source that can be used outside. One alternative is a portable camp stove with small cans of gas. Keep a pair of heavy,comfortable shoes or boots in your home, at work, and in your vehicle. If there is an earthquake, there will be lots of fragments of broken glass. Light shoes will not protect your feet as well as heavy shoes will.
Every family needs to have earthquake emergency plans. How will family members leave the area during the chaos following an earthquake? Everyone should agree on a meeting point outside of the area — perhaps in a town several miles away. Also important is an arrangement for family members to communicate if there is an earthquake. If an earthquake happens in a large city, many of the telephone lines within the city are likely to be down. The few remaining working lines will be busy with the calls that naturally occur after a disaster and it will be difficult to call from one part of the city to another.
It might, however, be possible to call outside the city. A sensible arrangement is to have all of the members of the family call to check in with a friend or relative who lives more than a hundred miles away.
Although scientists still cannot predict earthquakes, they are learning a great deal about how the large plates in the earth's crust move, the stresses between plates, how earthquakes work, and the general probability that a given place will have an earthquake. Someday soon it may actually become possible to predict earthquakes with accuracy. However, even if prediction becomes possible, people who live in areas where earthquakes are a common occurrence will still have to do their best to prevent disasters by building structures that are resistant to ground movement and by being personally prepared.
These precautions can make a great difference in saving lives and preventing the loss of homes. Education concerning how to survive an earthquake should be a major emphasis for all government programs and earthquake-related research projects.
Words: 890
New Words
earthquake n. 地震
detect vt. 察覺,發(fā)現(xiàn);探測
hen n. 母雞
pigeon n. 鴿子
experimental a. 實(shí)驗(yàn)的,用作實(shí)驗(yàn)的,根據(jù)實(shí)驗(yàn)的
◆radon n. 氡(一種由鐳的衰變而產(chǎn)生的放射性氣態(tài)元素)
wax vi. 變大,增強(qiáng) n. 蠟
destruction n. 破壞,摧毀
withstand vt. 經(jīng)受,承受,頂住
weld vt. 焊接
joint n. 1.接頭,接縫,接合處 2.關(guān)節(jié) a. 共有的,聯(lián)合的
architect n. 建筑師,設(shè)計(jì)師
column n. 1.圓柱,石柱,碑 2.(印刷品每頁上的)列,欄
horizontal a. 與地平線平行的,平的,水平的
beam n. 1.梁,橫梁 2.光束,射束 vi. 1.愉快地微笑 2.發(fā)光,發(fā)熱 vt. 播送(消息、電視節(jié)目等)
vertical a. 垂直的,豎的,立式的
pillar n. 1.柱子,柱狀物 2.有力的支持者;棟梁
rod n. (木質(zhì)或金屬)桿,竿
enclose vt. 1.圍住,包住 2.把……裝入信封,附寄
besides prep. 除... ...之外(還有) ad. 而且,此外
cupboard n. 食櫥,櫥柜
cabinet n. 1.櫥柜,陳列柜 2.內(nèi)閣
fasten vt. 使牢固,使固定
gallon n. (容量單位)加侖
bacterium n. 細(xì)菌;病菌
receiver n. 1.收音機(jī),收報(bào)機(jī),接受器 2.電話聽筒
battery n. 1.電池 2.一套,一組
spade n. 鏟子,鍬
rope n. 繩,索 vt. 用繩捆或扎
▲extinguish vt. 1.使熄滅,撲滅 2.使(希望、愛情、感情等)破滅
extinguisher n. 滅火器
handy a. 1.手邊的,近便的 2.有用的,方便的
auxiliary a. 輔助的,補(bǔ)助的,附加的
portable n. 輕便的,便攜的,手提式的
boot n. 靴子
fragment n. 碎片,碎塊,斷片 v. (使)成碎片
chaos n. 混亂,無秩序
sensible a. 明智的,合情理的
crust n. 1.外殼;硬的表面 2.面包皮;糕餅等的酥皮
accuracy n. 精確(性),準(zhǔn)確(性)
occurrence n. 1.發(fā)生的事情,事件 2.發(fā)生,出現(xiàn)
resistant a. 抵抗的,對抗的
precaution n. 預(yù)防,預(yù)防措施
Phrases and Expressions
watch … for 留意,觀察
come out of 離開,從... ...出來
after all 應(yīng)該記住,別忘了 畢竟,終究
attach sth. to sth. 把某物系在、縛在或附在另一物上
in addition (to) 加之;除... ...之外
at work 在工作的地方;在工作
put out 熄滅,撲滅
turn off 關(guān)上(電源、煤氣、水等),關(guān)閉
agree on 就……達(dá)成一致意見
be busy with 忙于,忙碌
check in 登記,報(bào)到
make a difference (對某人或物)有影響/起作用
Proper Names
Hanshin 阪神(日本)
如何作好防震準(zhǔn)備工作
從理想上說,人們希望知道地震什么時(shí)候發(fā)生,破壞程度如何。 在日本和中國,人們長期以來一直相信地震是可以預(yù)測的。 在日本,科學(xué)家在陸地上和海洋中鋪設(shè)電線,以監(jiān)測它們的運(yùn)動。 而中國人的傳統(tǒng)做法是觀察動植物以獲取地震的警示信號。 例如,中國人已經(jīng)注意到,地震之前雞的行為有異常:它們夜晚不肯進(jìn)籠。 他們還注意到,蛇會爬出地穴而凍死,狗會狂吠不已,甚至那些平常很安靜的狗也會叫個不停。 日本的阪神地震發(fā)生之前,有報(bào)告說大批魚群游到了水面。 有些鳥,如鴿子,也似乎顯得特別聒噪,據(jù)說地震前它們飛行的方式也與往常不同。 也許最有趣、也最容易測量的,是地震前地下水發(fā)生的化學(xué)變化。 實(shí)驗(yàn)數(shù)據(jù)似乎表明,地震前地下水中氡的含量會增高。
人們還希望能夠預(yù)防地震造成的重大財(cái)產(chǎn)損失。 要知道,多數(shù)在地震中喪生的人都是被倒塌的建筑物砸死的。 所以,建造具有抗震能力的樓房結(jié)構(gòu)成為關(guān)注的重點(diǎn)。 鋼似乎是最佳的建材,但一旦被焊接成僵硬的結(jié)構(gòu)就不行了。 許多新式結(jié)構(gòu)都采用了一種新型的鋼接合方法,即I形接合,它看起來是種最耐用的接合。 這些鋼接合在移動時(shí)不會斷裂。 同樣,為了預(yù)防財(cái)產(chǎn)損失,建筑師如今設(shè)計(jì)樓房時(shí)會使房屋的支柱和橫梁力度相等,而垂直支柱則深深插入堅(jiān)實(shí)的地基中。 此外,許多新型房屋都有較輕的屋頂和堅(jiān)實(shí)的墻壁。 高架橋的水泥柱先前只是在內(nèi)部埋設(shè)鋼條,如今外面也包上了鋼板。
除了設(shè)法改善建筑結(jié)構(gòu)外,地震頻發(fā)區(qū)的人們也需要為可能發(fā)生的大地震做好防備工作。 他們應(yīng)當(dāng)定期檢查和加固房屋,將重物放在低處,將碗櫥和柜子貼墻放置,加固房門以防地震時(shí)突然脫開。
除做好房屋的防震外,這些地區(qū)的人們還需要為自身做些防備。 他們應(yīng)該在家里和工作地儲備些水和食物。 最好每人儲備幾加侖水。 儲備一些可以凈化水和消滅病菌的東西也很重要,這樣就可以安全飲用其他來源的水了。 每人準(zhǔn)備一周的食物。 地震救生儲備還包括無線電接收器、手電、備用電池、急救用品、鐵鍬、帳篷、繩子和保暖衣物。 此外專家們還提出了以下建議:
手邊備有滅火器。 應(yīng)該在住處、工作場所和汽車?yán)铮ㄈ绻阌熊嚨脑挘┒即娣乓粋€。 滅火器應(yīng)該是可以撲滅任何火災(zāi)的那種。 有必要的話,準(zhǔn)備一些能關(guān)閉煤氣和自來水管道的特制工具。 放置一個備用的戶外烹調(diào)和取暖用具,或者準(zhǔn)備一個便攜式露營灶和幾小罐煤氣。 在住處、工作場所和汽車?yán)锓乓浑p厚重、舒適的鞋或靴子。 發(fā)生地震時(shí)會有大量的玻璃碎片。 輕便的鞋子不能像厚重的鞋子那樣保護(hù)好你的雙腳。
每個家庭都需要制定地震救急計(jì)劃。 如何讓一家人在地震的混亂中安全離開? 大家應(yīng)該商定一個地震區(qū)外的會合點(diǎn)——可能是在幾英里外的某個市鎮(zhèn)。 同樣,安排好家人地震時(shí)的聯(lián)絡(luò)方式也很重要。 地震若發(fā)生在大城市,市里的許多電話線路很可能中斷, 剩下的為數(shù)不多的可用線路會很忙,因?yàn)闉?zāi)難之后自然會有許多電話,要從市里的一個地方打到另一個地方會很困難。 但是可能可以與市外通電話。 明智的安排是,讓所有的家人都給一個住在一百多英里之外的朋友或親戚打電話,以報(bào)平安。
盡管科學(xué)家們?nèi)詿o法預(yù)測地震,但對地殼中的大板塊如何移動,板塊間的壓力如何,地震如何發(fā)生,某地區(qū)發(fā)生地震的一般概率為多少,他們正了解得越來越多。 在不久的將來,精確預(yù)測地震將成為可能。 然而,即使可以預(yù)測,居住在地震頻發(fā)區(qū)的人們還是應(yīng)盡力預(yù)防災(zāi)難,辦法是建造能夠抵抗地表運(yùn)動的房屋,同時(shí)做好個人準(zhǔn)備。 在挽救生命和防止家庭損失方面,這些預(yù)防措施會發(fā)揮很大的作用。 教育人們?nèi)绾卧诘卣鹬行掖嫦聛?,?yīng)該是所有政府規(guī)劃和地震研究項(xiàng)目的重點(diǎn)所在。