【正文】 les begin moving within a slope. 監(jiān)視迫近的山崩，最常見的辦法就是觀察這座山形狀的變化。迪克森說?？茖W(xué)家們說，這種儀器通過警報某處有險情需要撤離，每年可以拯救成千上萬的生命。s a lot of flexibility in how you can use these anisms. 研究人員們希望，總有一天藻類會成為很容易使用的燃料來源。 activity and produce larger quantities of hydrogen. 只可惜消除硫酸鹽不僅使藻類細胞的工作速度減慢，而且大大減少了氫的數(shù)量。這種方式不能切實可行的生產(chǎn)廉價的能源。 ‖例如，藻類會在空氣存在環(huán)境下產(chǎn)生氫氣。 The algae are grown in narrownecked glass bottles to produce hydrogen in the lab. During photosynthesis, plants normally make sugars or starches. But under certain conditions, a lot of algae are able to use the sunlight energy not to store starch, but to make hydrogen. Ghirardi says. For example, algae will produce hydrogen in an air free environment. It39。例如，瑪麗亞 可惜你不是一株植物，必須困難的并且花上大價錢將陽光轉(zhuǎn)換為穩(wěn)定的能源。re a plant, it39。ve been using sunlight as an energy source for billions of years. 太陽能的使用已經(jīng)不足為奇。 to the first paragraph， people try to 根據(jù)第一段，人們設(shè)法去 …… away from viruses because they are causes of various diseases. 躲避病毒，因為他們的疾病都是由病毒引起的。 ，貝爾徹的電池模型是完全由病毒構(gòu)成的金屬圓盤，看起來就像普通手表電池。硬幣形狀的手表電池通常比分幣還小。哈蒙德和以電池形式存儲能量的專家蔣業(yè)明。在位于劍橋市的麻省理工學(xué)院，她和合作者一起用新方式融合了不同的科學(xué)領(lǐng)域。re not so strange for engineer Angela Belcher, who first came up with5 the idea. At the Massachusetts Institute of Technology (MIT) in Cambridge， she and her collaborators bring together different areas of science in new ways. In the case of the virusbuilt batteries， the scientists bine what they know about biology ， technology and production techniques. 病毒和電池的搭檔似乎并不常見，但這對于工程師安吉拉 Not everyone runs from the tiny disease carriers , Cambridge， Massachusetts4, scientists have discovered that some viruses can be helpful in an unusual way. They are putting viruses to work， teaching them to build some of the world‘s smallest rechargeable batteries. 然而， 并不是每個人都躲避這些病毒攜帶者。s on people39。re all disease caused by viruses， tiny microanisms that can pass from person to person. It‘s no wonder1 that when most people think about viruses, finding ways to steer clear of2 viruses is what39。難怪大部分人一提到病毒，首先想到的是如何躲避病毒。 Viruses and batteries may seem like an unusual pair, but they39。貝爾徹最早產(chǎn)生了這一想法。re working on things we traditionally don‘t associate with nature, says Hammond. 貝爾徹的團隊包括幫助組裝微型電池的寶拉 A 型、 C 型和 D型電池都可以握在手里。 The ideal battery will store a lot of energy in a small package. Right now， Belcher‘s model battery， a metallic disk pletely built by viruses， looks like a regular watch battery. But inside， its ponents are very smallso tiny you can only see them with a powerful microscope. 理想的電池應(yīng)當(dāng)體積小、儲能多。這些為電池能會改變我們對病毒的看法。 tiny is one battery part? 一個電池部件有多??？ width is one tenth of a hair. 它的寬度是頭backer bag 60 發(fā)的 1/10 35Putting Plants to Work 植物效能 Using the power of the sun is nothing new. People have had solarpowered calculators and buildings with solar panels for decades. But plants are the real experts : They39。 Ceils in the green leaves of plants work like tiny factories to convert sunlight, carbon dioxide, and water into1 sugars and starches, stored energy that the plants can use. This conversion process is called photosynthesis. Unfortunately, unless you39。這種轉(zhuǎn)換過程叫做光合作用。s trying to trick them into producing hydrogen4 instead of sugars when they perform photosynthesis. Once the researchers can get the algae working efficiently, the hydrogen that they produce could be used to power fuel Cells in cars or to generate electricity.一些科學(xué)家正試圖像植物的作用過程一樣，將植物，或生物的細胞活動看做微型光合發(fā)電站。一旦研究人員了解藻類如何有效率的進行工作，由此產(chǎn)生的氫氣可用于燃料電池動力汽車和發(fā)電。奇若蒂說： ―但在一定條件下，有很多藻類能夠利用日光能源產(chǎn)生氫氣而不是儲存淀粉。s not a practical way to produce cheap energy. But Ghirardi and her colleagues have discovered that by removing a chemical called sulfate from the environment that the algae grow in, they will make hydrogen instead of sugars, even when air is present. 藻類在空氣中雖然可以工作，但是充滿困難。s cells work very slowly, and not much hydrogen is produced. Still, the researchers see this as a first step in their goal to produce hydrogen efficiently from algae. With more work, they may be able to speed the cells39。 The researchers hope that algae will one day be an easytouse fuel source. The anisms are cheap to get and to feed, Ghirardi says, and they can grow almost anywhere: You can grow them in a reactor, in a pond. You can grow them in the ocean. There39。 ‖ 1. What does the writer say about plants concerning solar energy? 關(guān)于植物涉及太陽能，作者說 ? C) Plants have been using solar energy for billions of years. 植物數(shù)十億 年來一直利用太陽能 2. Why do some scientists study how plants convert sunlight carbon dioxide, and water into sugars and starches? 一些科學(xué)家研究植物如何把陽光、二氧化碳、水轉(zhuǎn)化成糖和淀粉的原因backer bag 60 是 ? B) Because they want green plants to bee a new source of energy. 因為他們想讓綠色植物變成新的能源 3. According to the fifth paragraph, under what conditions are algae able to use solar energy to make hydrogen? 根據(jù)第五段， ___時，海藻能用太陽能制造氫氣？ B) When there is no oxygen in the air. 當(dāng)空氣中沒有氧氣 4. Researchers have met with difficulties when trying to make algae produce hydrogen efficiently. Which one of the following is one such difficulty? 研究員們發(fā)現(xiàn)在努力使海藻有效產(chǎn)生氫氣時存在困難，這樣的困難是 ? D) It is too slow for algae to produce hydrogen when the sulfate is removed. 硫酸鹽被清除后，海藻太慢而不能產(chǎn)生（更多）的氫氣 5. What is NOT true of algae? 于海藻的說法，錯誤的是 ?C) They are cheap to eat. 作為食物，它們很便宜 36Listening Device Provides Landslide Early Warning 聽覺儀器提供早期山崩預(yù)警 A device that provides early warning of a landslide by monitoring vibrations in soil