请问这两篇文章来自什么资料里的？

nbshanshanUID：3322812

今天在某联系网站上联系，发现第一套题目里就有两篇很难的文章，但并不是阅读jj里的题，所以想问下大家这两篇文章来自哪里。
第一篇将的时深海动物群的食物来源，有两个理论，一个理论说来自细菌，另一个说来自advection。这文章有7到8个题目。第一段原文如下：
The deep sea typically has a sparse fauna dominated by tiny worms and crustaceans, with an even sparser distribution of larger animals. However, near hydrothermal vents, areas of the ocean where warm water emerges from subterranean sources, live remarkable densities of huge clams, blind crabs, and fish.

第二篇讲感冒病毒的，说感冒病毒有很多种，所以很难做出general的抗体，但后面提出两个可能制作感冒病毒抗体的方法。这个文章也有7题。第一段如下
Viruses, infectious particles consisting of nucleic acid packaged in a protein coat (the capsid), are difficult to resist. Unable to reproduce outside a living cell, viruses reproduce only by subverting the genetic mechanisms of a host cell. In one kind of viral life cycle, the virus first binds to the cell’s surface, then penetrates the cell and sheds its capsid. The exposed viral nucleic acid produces new viruses from the contents of the cell. Finally, the cell releases the viral progeny, and a new cell cycle of infection begins. The human body responds to a viral infection by producing antibodies: complex, highly specific proteins that selectively bind to foreign molecules such as viruses. An antibody can either interfere with a virus’s ability to bind to a cell, or can prevent it from releasing its nucleic acid.

有没有大神知道这两篇文章来自什么资料，有没有必要做。那个网站号称这两篇文章来自“经典真题240篇”。

另外，大家都在哪里做练习题？谢谢！

以希UID：3946411

都是老G的文章

nbshanshanUID：3322812

以希 发表于 2019-6-26 12:24
都是老G的文章

好的，感谢大神！
大神一般在哪做练习题啊？是不是还是就用pdf？

以希UID：3946411

nbshanshan 发表于 2019-6-26 12:30
好的，感谢大神！
大神一般在哪做练习题啊？是不是还是就用pdf？

尽量在电脑上操作练习就可以吧，很多材料，多做做就好了

nbshanshanUID：3322812

以希 发表于 2019-6-26 12:36
尽量在电脑上操作练习就可以吧，很多材料，多做做就好了

以前在kmf上练习的，结果现在kmf的jj不全了……