False or Not Given

　　MCQ题要求考生在ABCD四个选项中选择一个正确答案，其他三个选项同原文提供的信息相反或不符。如原文可能说生物课在R201室上课，而MCQ的一个选项是R202。显然，这个选项不是正确答案，不能选。

　　做选择题主要可以采用如下几种方法：1、如果问题中的内容在文章中有明确阐述，根据文章内容判断并选择正确的答案;2、如果问题中的选项在文章中没有直接表述，则需要根据文章中的内容进行推断，然后得出结论并选择正确答案;3、如果没有办法根据文章中的内容确定正确答案，则可以从选项中把错误答案逐个排除，剩下的就是正确答案了。

　　做选择题时可以应用一些小窍门，比如，要先看文章后面的题目，然后带着问题从文章中找答案。简单的办法就是通过skimming 与scanning在文中找出与问题相对应的词语或句子，在下面划线，然后再从这些地方去寻找答案。

　　此外，在英语文章中，尤其是学术类的文章中，很少出现非常绝对的提法，因此文章中也就极少会用到象absolutely, definitely 等表示彻底、绝对肯定或否定的词语。所以，如果选项中出现这样的词，基本上就不用考虑它所在的句子了。

　　下面，让我们用Sample exercise为例子，来具体分析一下做选择题的方法。

　　Sample exercise

　　Shark Senses

　　THE SHARKS SIXTH SENSE: The shark has all the senses that we humans do but they also have one we dont have. Tiny pores on the snout leads to jelly-filled sacs known as ampullaes of Lorenzini. This sense can detect very weak electrical fields that can detect electrical vibes as weak as half a billionth of a volt. Struggling or scared animal creates a strong electrical current, which flows through the water, and even though it gets weaker as it travels away from the animal, sharks can pick it up. Every animal sends electrical vibes. A shark can find animals under the sand, and at night, and when at the last moment of attack when the eyes are rolled back and it cannot see. In many cases when doing shark research the shark would attack the boat and other objects instead of the food offered. Humans used to think that the shark was just a stupid, crazy eating machine that went after anything. It turns out however that the shark when coming for the prey would roll its eyes back and have the ampullaes of Loranzini direct it to the prey. The boat gives out very strong electrical vibes which confuse the shark and direct it to the boats direction, and since the shark cannot see at the moment it would not know the boat is not the prey. Hammerhead sharks have a large number of ampullaes of Lorenzini on their heads. Hammerheads use their heads like mine sweepers to find stingrays, and other prey in the sand. Large number of hammerheads can be found near underwater volcanoes which attract them from miles away with their electrical fields. The rare and strange goblin shark has a strange snout hanging over is head which may be used the same way as a hammerheads head and help it hunt in the deep dark water it lives in. Goblin shark teeth have been found in underwater electrical cables.