新GRE閱讀練習(xí)題（27）.

　　新GRE閱讀考察面很多,主要考察的是學(xué)生的邏輯理解能力和推理能力，考生除了擁有大量的詞匯以外，還需能夠迅速了解出題者的意圖。下面給大家準備了一些新GRE閱讀的練習(xí)。

　　Certain extremely harmful bacteria found only in sewage are difficult to detect directly. Testing for E. coli, an easily detected and less harmful type of bacteria, in ocean water would be a reliable way of determining whether or not these more harmful bac-teria are present, since ocean water contains E. Coli only if the water is contaminated with sewage that contains the harmful bacteria.

　　Which of the following, if true, most seriously weakens the argument?

　　(A) There are many different strains of the E. coli bacteria, and only some of these strains are harmful.

　　(B) Some types of bacteria found in sewage are neither disease-causing nor difficult to detect directly.

　　(C) Some of the types of bacteria found in sewage along with E. coli are not harmful to people unless the bacteria are ingested in large quantities.

　　(D) E. coli dies out much more quickly than some of the more harmful bacteria found in sewage and then can no longer be easily detected.

　　(E) Some of the types of bacteria found in sewage along with E. coli reproduce at a slower rate than E. coli.

　　答案：D

　　以上便是澳際小編為廣大GRE考生整理的新GRE閱讀練習(xí)，考生通過大量的練習(xí)，相信日積月累，GRE閱讀分數(shù)也會快速得到提高!

相關(guān)鏈接：

新GRE閱讀練習(xí)題（25）

新GRE閱讀練習(xí)題（24）

新GRE閱讀練習(xí)題（23）