2014职称英语考试理工类冲刺练习之补全短文8

　　Don’t Rely on Plankton to Save the Planet

　　Encouraging plankton growth in the ocean has been touted by some as a promising way to remove carbon dioxide from the atmosphere. ____1____

　　Adding iron to patches of ocean can make plankton bloom temporarily. The microscopic organisms suck up dissolved carbon dioxide from the water, which in turn is replaced by carbon dioxide from the air. ____2____

　　Jorge Sarmiento from Princeton and his colleagues developed a complex computer model to analyse how factors such as ocean chemistry and water circulation would affect the process if 160,000 square kilometres of ocean were seeded with iron for a month. ____3____

　　In their scenario, which covers an area 10 times as big as the largest experiment of this kind ever proposed, fertilising the ocean removes 1 million tonnes of carbon from the atmosphere ― just 0.2 percent of the carbon dioxide humankind spews out each month.

　　Rough estimates in the past have predicted similarly disappointing results. ____4____ says Sallie Chisholm, an environmental engineer from the Massachusetts Institute of Technology.1 “But the take-home2 message is the same. ____5____

　　注释：

　　1.the Massachusetts Institute of Technology：麻省理工学院

　　2.take-home：实得的

　　练习：

　　A　Its opponents argue, however, that it willrstop global wanning.

　　B　Its opponents fear that it will damage the marine ecosystem, and now a computer model shows that the trick would also be remarkably inefficient.

　　C　As plankton die and settle on the ocean fldor, their carbon is supposedly locked up in the seabed.

　　D　They found that 100 years later only between 2 and 11 per cent of the extra carbon that was originally taken up by plankton had actually been removed from the atmosphere.

　　E　“ These are newer and better models,”

　　F　Ocean fertilisation is not the answer to global warming.

　　答案与题解：

　　1.B　本文第一句话说的是，一些人竭力劝说促使海洋浮游生物生长是去除大气中二氧化碳的一种有希望的方法。从“竭力劝说”这个短语中可以推出，不同意这假设的大有人在。从提供的选项看，只有A和B有可能，因为A和B都提到了这一假设的反对者。A说的是：但是反对这一假设的人争辩说，促使浮游生物生长会阻止全球变暖。B说的是：但是反对这一假设的人担心，促使浮游生物生长会破坏海洋生态系统，并且计算机模型也显示这种办法效果很差。A实际上是同意一些人所做的假设，所以不对。也就是说，B才是正确选项。

　　2.C　第二段前两句的意思是：在海洋的部分水域放入一些铁暂时可以促使浮游生物生长。这些微生物可以吸收溶解在水中的二氧化碳，而水中被微生物吸收了的二氧化碳又可以从空气中的二氧化碳得到补充。下面这句话应当是什么呢?C说的是：随着浮游生物的死亡，落在海底后，它们中的碳被假定锁在了海床上。可以看出，此句跟上面两句话很连贯。

　　3.D　第三段第一句话主要讲Jorge Sarmiento和他的同事用一个复杂的计算机模型分析诸如海洋化学和水流等因素对这种方法的影响。那么接下来的话应当告诉读者他们分析的结果。D是这么说的：他们发现，100年后原先由浮游生物吸收的额外的碳只有2%～11%是来自大气的。D是结果，因此是正确答案。

　　4.E　这个问题的回答很简单，因为空格后面有“says”这个词，它预示着所填入的句子应该是带引号的。E是唯一一个带引号的句子。E的意思是：这些是比较新的也是比较好的模型。

　　5.F　最后一段讲的是：过去一些粗略的估计预测到的都是相的令人失望的结果，它们提供的核心信息是相同的。即对海洋施肥不是解决全球变暧的办法，可见F是正确的。

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