【正文】 ch as headache，nausea and irritability． 已經(jīng)證實噪音能產(chǎn)生諸如頭痛、惡心和煩躁這樣的焦慮癥狀。s mental age with his or her chronological age and multiplying by 100． 一般來說，IQ即智力商數(shù)，是用孩子的智力年齡除以其年齡，然后乘以100得出來的。 gases and liquids can be converted into solids by removing their heat． 通過降溫，多數(shù)氣體和液體能變成固體。 questions have been studied by research scientists for many years． 從事研究的科學(xué)家們已經(jīng)對許多問題做了多年的探討。 is called the 1aw of conservation of momentum． 這稱為動量守恒定律。(現(xiàn)在進行時) improvements were being made in the design at that time. 那時，設(shè)計正在修改中。中。 telephone had been ringing for three minutes before somebody answered it． 電話響了三分鐘后才有人來接。 has been using the earth39。 birds will have moved to the south before winter sets in． 冬天到來之前這些鳥就已遷移到南方了。 travel had not broadened his mind． 很顯然，旅行并沒有開闊他的思路。 the last thirty years man has discovered and developed a new source of energy called nuclear energy． 在最近的三十年中，人類發(fā)現(xiàn)并開發(fā)了一種稱為核能的新能源。 only certainty in the future is that radically new things will be happening． 未來唯一可以肯定的是，極先進的新事物將會層出不窮。 was making a call from 10 to ll last night． 他昨晚10點到11點在打電話。 is ing to visit our factory tomorrow． 他明天要來參觀我們的工廠。36．They were to visit the 1ob that afternoon． 他們計劃那天下午參觀實驗室。 is to judge“proven ability”，or“future potential”?將由誰來判斷“已經(jīng)證實的能力”或“將來的潛在能力”呢? told them we would do the experiment the next day． 我們告訴他們我們第二天要做實驗。 are going to have to 1earn to share the resources we have．我們必須學(xué)會如何分享現(xiàn)在擁有的資源。 space colonists will e from all over the world． 早期太空移民將來自世界各地。s，radio telescopes searched space for signs of intelligent life beyond Earth．二十世紀(jì)六、七十年代，射電望遠(yuǎn)鏡搜索太空尋找地球外存在智慧生命的跡象。 WorldWar Ⅱ，the energy derived from burning the various fractions of petroleum exceeded that of coal．二戰(zhàn)后，燃燒各種石油餾分所產(chǎn)生的能量超過了燃燒煤所產(chǎn)生的能量。 before fossil fuels are exhausted，demand will greatly exceed supply． 在礦物燃料耗盡之前，需求量將大大超過供應(yīng)量。 affects matter in many ways．溫度在許多方面對物體產(chǎn)生影響。 does beautiful work with her hands． 朱莉的手工活做得很好。 premium is usually paid every year．保險費通常每年支付一次。 present，almost all our energy es from fossil fuels．現(xiàn)在，幾乎我們所有的能源都來自礦物燃料。 is very strongly magnetic． 鐵具有很強的磁性。 1678 the Dutch scientist Christian Huygens was the first to propose that light travels in waves．1678年，荷蘭科學(xué)家克里斯琴 radiation escapes into the atmosphere，radiation pollution will occur． 如果射線排到大氣中，就會產(chǎn)生放射污染。 learned to make clothes from some parts of plants and from wool． 人學(xué)著用植物的某些部分和羊毛制做衣服。 train will arrive tomorrow． 火車明天到達。 you allowsomewater tofall on the smooth surface of a table，the water will normally continue to spread until its direction is changed by a solid object．若讓水落在光滑的桌面上，水通常會繼續(xù)向外擴展直到遇到固體才改變方向。 is going to be a report on educationtonight．今晚有一個關(guān)于教育問題的報告。 asked her where she would go． 我問她要到哪里去。 you lift up a rock，you are changing the chemical energy of the food you have eaten into muscle energy． 當(dāng)你舉起巖石時，你所攝取的食物中的化學(xué)能正在轉(zhuǎn)化為體能。 plane is leaving for Beijing． 這架飛機要飛往北京。．Brown told me that he was leving for Beijing in a few days． 布朗先生告訴我?guī)滋旌笏鸵x開這里去北京。 shall be having a business talk with Mr．Brown in a minute． 我們一會兒要和布朗先生進行業(yè)務(wù)會談。 have helped to develop many of the modern tools of 。 said that he had sent her an ． 他說他曾給她發(fā)過電子郵件。 50 years time UK demand could almost have doubled, while indigenous supplies of oil and natural gas will have virtually ceased and world oil production will be falling． 五十年后英國需要的能量可能會增加近一倍，而那時英國本土的石油和天然氣供應(yīng)將完全終止，而且世界石油產(chǎn)量也將下降。s resources more and more rapidly over the years． 數(shù)年來，人類正越來越快地耗費著地球的資源。第二章被動語態(tài) form of energy is called potential energy． 這種能被稱為潛能。(一般過去時) engineering bees more and more precise，better accuracies than this will be needed． 隨著工程需求越來越精確，我們需要比這更高的精確度。(過去進行時) number of different coolants had been employed，including water，carbon dioxide and liquid metals． 用過的冷卻劑多種多樣，包括水、二氧化碳和液態(tài)金屬。 an electric fire the electrical energy is converted into heat． 在電熱爐中，電能轉(zhuǎn)化為熱能。 moon has been described by song writers and poets as a place for a romantic escape．月球一直被流行歌曲作者和詩人描繪成一個浪漫的避難所。 the petroleum was obtained，it could be moved overland through pipes． 石油一旦開采出來，就可以用管道從陸上運輸。 Brown teaches us English in the university．布朗夫人在大學(xué)教我們英語。（第三章 動詞不定式） remember to switch off the electricity is important． 記著關(guān)電很重要。 is natural to remain at about arm39。 was his job to guide ships up the river． 他的工作是引導(dǎo)船只沿河而上。 is a difficult problem for the scientist to unravel these plicated molecules． 對科學(xué)家來說，解釋這些復(fù)雜的分子是個難題。 does not take much in the way of chemical change to turn that(the fat)into petroleum． 生物脂肪轉(zhuǎn)化成石油并不需要很多化學(xué)反應(yīng)。 only way to explore it is to use your imagination． 探索新事物唯一的方法是運用你的想象力。ve arranged to meet him at ten o39。 must find out what to do next． 我們必須搞清楚下一步做什么。39。 thought it useless to explain that we borrowed the word“marmalade”from French． 我想不用解釋我們是從法語中借用了marmalade這個詞。 had the power to do good or evil． 它可以行善或作惡。(目的狀語) wood bines with oxygen in the air to form carbon dioxide and water vapor. 木塊與空氣中的氧結(jié)合產(chǎn)生二氧化碳和水蒸氣。 was a precious item，too precious to be wasted． 它是一種寶貴的東西，太寶貴了而不能浪費。 sudden change can cause rocks to shatter due to the alternate expanding and contracting． 這種(溫度的)突然變化會由于膨脹收縮交替出現(xiàn)而導(dǎo)致巖石破碎。 you see him go out? 你看見他出去了嗎? heard her sing in the next room． 我聽見她在隔壁唱歌。 builders are then invited to submit estimates，or tenders，for doing the work． 然后邀請不同的建筑商進行報價或投標(biāo)。 elements seem to be working well under high voltage． 這些元件似乎正在高壓下正常工作。（第四章 分詞） is a developing country．中國是一個發(fā)展中國家。 see this page because light reflecting form the sun or an electric light travels from the paper to your eyes． 我們看到這頁紙，是因為從太陽或電燈反射的光從紙進入眼睛。 this principle，a large number of cores can be strung on a screen of wires． 利用這一原理，可以把大量的磁芯排在線路板上。 careful when crossing the street． 穿過街道時要當(dāng)心。m not saying that the new system is perfect or anything．I39。 is not surprising，considering that our bodies are two—thirds water． 考慮到人體的三分之二是水，這也就不足為奇了。 many rades being absent，the meeting had to be put off． 沒來的同志太多，會議只好推遲。 all went home，he remainin