helr逻辑笔记总结+使用心得（ 11月12日杀鸡成功）

floraangfan

谢谢分享如此好的东西！感谢！

elenaknight

thanks so much!!

ys2441

谢谢楼主！！！！！

kevinchy

thanks a lot

coolcubbit

:):):):):):):):):):):):):):)

vincentliuacca

thx for sharing~~~~

outsider0214

已经读笔记3遍了，很多题目还是觉得不能分类，比如
Half of the subjects in an experiment-the experimental group-consumed large quantities of a popular artificial sweetener.Afterward, this group showed lower cognitive abilities than did the other half of the subjects-the control group.who did not consume the sweetener.The detrimental effects were attributed to an amino acid that is one of the sweetener's principal constituents.

Which of the following, if true, would best help explain how the sweetener might produce the observed effect?

    AThe government's analysis of the artificial sweetener determined that it was sold in relatively pure form.
    BA high level of the amino acid In the blood inhibits the synthesis of a substance required for normal brain functioning.
    CBecause the sweetener is used primarily as a food additive, adverse reactions to it are rarely noticed by consumers.
    DThe amino acid that is a constituent of the sweetener is also sold separately as a dietary supplement.
    ESubjects in the experiment did not know whether they were consuming the sweetener or a second, harmless substance.

henry1123000

好~~~~~~~~~~~~~~~~~

gbn123

谢谢分享。。。

又是九

thank you~~~~~~~~~~~~