I should convey my appreciation to my high school teachers, without ____ help I wouldn’t achieve such a big success.
A. whom B. them C. which D. whose
— Mum, would you please buy me an MP5 player?
— If you can help do some housework the whole vacation, you ____ have one as a reward.
A. must B. need C. would D. shall
— She might complain about you to your manager.
—____ ? I know I am in the right.
A. What for B. Why not C. What’s up D. So what
After Lincoln was made ___ president of the United States, he insisted on the slaves___. . A /; be set free B /; being set free C the; setting free D the ; being set free
当前，“酒后驾车”（drinking and driving）成了人们热议的话题。请你根据以下提示对“酒后驾车”谈谈个人看法：
1．“酒后驾车”的危害。如：引发交通事故，造成交通阻塞，构成生命危险，
造成财产损失等。
2．你的建议。
注意：1．词数100词左右； 2．开头已为你写好，不计入总词数。
Nowadays, drinking and driving is becoming a heated topic among people in China. Here, I’d like to air my views about it.
阅读下面短文，并根据短文后的要求答题（请注意问题后的字数要求）。
[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.
1.What is the main idea of the text？(no more than 10 words)________________________
2.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.
3.Fill in the blank in Paragraph 2 with proper words.(no more than 5 words)
___________
4.What can cause intelligence difference？(no more than 8 words)
________________________________________________________________________
5.What does the word "they" (Line 2, Paragraph 3) probably refer to？(no more than 8 words)
________________________________________________________________________
