新GRE考试阅读同步习题
编辑点评： 新GRE阅读考试考察大家的方面较多，除了大家需要拥有一定的.词汇量以外，还需大家在解题的时候能够迅速了解出题者的意图，这就需要大家充分发挥自己的逻辑理解能力和推理能力，大家可以利用下文的新GRE阅读短文练习进行练习。
Although spinach is rich in calcium, it also contains large amounts of oxalic acid, a substance that greatly impedes calcium absorption by the body. Therefore, other calcium-containing foods must be eaten either instead of or in addition to spinach if a person is to be sure of getting enough calcium.
Which of the following, if true, most seriously weakens the argu-ment above?
Rice, which does not contain calcium, counteracts the effects of oxalic acid on calcium absorption.
Dairy products, which contain even more calcium than spinach does, are often eaten by people who eat spinach on a regularbasis.
Neither the calcium nor the oxalic acid in spinach is destroyed when spinach is cooked.
Many leafy green vegetables other than spinach that are rich in calcium also contain high concentrations of oxalic acid.
Oxalic acid has little effect on the body s ability to absorb nutrients other than calcium.
答案：E
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