阅读下面短文并回答问题,然后将答案写到答题卡相应的位置上(请注意问题后的词数要求)。

    [1]Global difference in intelligence is a sensitive topic, long filled with a large number of different opinions. But recent data has indeed shown cognitive (认知的) ability to be higher in some countries than in others. What's more, IQ scores have risen as nations develop --- a phenomenon known as the "Flynn effect". Many causes have been put forward for both the intelligence difference and the Flynn effect, including education, income, and even non-agricultural labor. Now, a new study from researchers at the University of New Mexico offers another interesting theory:intelligence may be linked to infectious-disease rates.

    [2]The brain, say author Christopher Eppig and his colleagues, is the "most costly organ in the human body". Brainpower consumes almost up to 90 percent of a newborn's energy. It's clear that if something affects energy intake while the brain is growing, the impact could be long and serious. And for vast parts of the globe, the biggest threat to a child's body -- and therefore brain ---is parasitic (由寄生虫引起的) infection. These illnesses threaten brain development __________. They can directly attack live tissue, which the body must then try every means to replace. They can invade the digestive pipe and block nutritional intake. They can rob the body's cells for their own reproduction. And then there's the energy channeled (输送) to the immune system to fight the infection.

    [3] Using data on national "disease burdens" (life years lost due to infectious diseases) and average intelligence scores, the authors found they are closely associated. The countries with the lowest average IQ scores have the highest disease burdens without exception. On the contrary, nations with low disease burdens top the IQ list.

    [4]If the study holds water, it could be revolutionary for our understanding of the still-confusing variation in national intelligence scores.

76. What is the main idea of the text? (no more than 10 words)

  ____________________________________________________________________

77. Complete the following statement with proper words. (no more than 4 words)

   Those countries that have the___________ are always at the bottom of the IQ list.

78. Fill in the blank in Paragraph 2 with proper words. (no more than 5 words)

                                                                     

79. What can cause intelligence difference? (no more than 8 words)

                                                                     

80. What does the word "they" (Line 3, Paragraph 3) probably refer to? (no more

than 8 words)

                                                                   

 

 0  42867  42875  42881  42885  42891  42893  42897  42903  42905  42911  42917  42921  42923  42927  42933  42935  42941  42945  42947  42951  42953  42957  42959  42961  42962  42963  42965  42966  42967  42969  42971  42975  42977  42981  42983  42987  42993  42995  43001  43005  43007  43011  43017  43023  43025  43031  43035  43037  43043  43047  43053  43061  151629 

违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com

精英家教网