随着PTE考生对PTE口语和PTE听力的重视，大家口语和听力的分数得到极大提高，但是PTE阅读渐渐成为考生们新的难题。
墨尔本悉尼文波PTE特别为PTE考生们挑选了适合练习PTE阅读的文章，主题，内容，长度都与PTE阅读题中的文章相似。激活学过的词汇，更新新的词汇，提高阅读速度，全面提升自己的阅读能力。
Viruses sense chemical signals left behind by their forebears so they can decide whether to kill or just to infect their hosts.
The discovery—in viruses that attack Bacillus bacteria—marks the first time that any type of viral communication system has ever been found. But researchers say that many other viruses could communicate with each other through their own molecular languages—perhaps even viruses that are responsible for human diseases. If that is the case, scientists might have found a new way to disrupt viral attacks.
The secret viral code was spotted by a team led by Rotem Sorek, a microbial geneticist at the Weizmann Institute of Science in Rehovot, Israel. Their findings are published in Nature on January 18.
“This is going to be one of those transformative papers,” says microbiologist Martha Clokie, who studies viruses that infect bacteria (known as bacteriophages, or phages) at the University of Leicester, UK.
Molecular: adj. [化学] 分子的；由分子组成的。
Be spotted by: 被…发现。
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