正确答案:parents who are otherwise exceedingly rational people can become irrational when it comes to their children
题目详解:可以结合上下文和helicopter的特点推断。
2. If parents take an attitude of benign neglect, they ______.
A . keep a watchful eye on their children but don't interfere in their affairs only when they are needed
B . left their children to their own devices if they get into trouble C . are indifferent to their children's trouble
D . jump in to solve all their children's problems
正确答案:keep a watchful eye on their children but don't interfere in their affairs only when they are needed
题目详解:第二段中：Take an attitude of being neglect: Supervise by being there, being awake and paying attention. Be quietly available to your kids, and they will come to you with what's important. 可见是既留心小孩，又不过分保护包办。
3. Parents should ______ on their child's first day at school. A . supervise their child all day
B . show their faith that their child can cope with the new situation C . pace up and down the room to ease their nervousness
D . foresee all the problems the child would encounter and arrange all the things for him/her
正确答案:show their faith that their child can cope with the new situation
题目详解:Demonstrate your faith in your child's ability to cope with new situations by appearing calm in potentially stressful situations such as her first day at school or going away to camp.
4. According to the passage, why should parents listen respectfully to each child's idea even if he has some rather bizarre or violent suggestions?
A . Because the child should be permitted to explore his own world. B . Because it makes parents gentler approaches more acceptable. C . Because it makes the child creative.
D . Because it's acceptable given that he is young.
正确答案:Because it makes parents gentler approaches more acceptable.
题目详解:文章末尾：Listen respectfully to each child's ideas without correcting or interrupting, even if he has some rather bizarre or violent suggestions. (This creates an atmosphere for parents to suggest a gentler approach.)不要受头脑中已有观点的影响。
Agricultural biotechnology seems to attract a lot of attention these days. The problem is that the debate on this topic seems to have been hijacked by extremists on both sides; environmentalists crying disaster and corporate spokespersons telling us soothingly that there's nothing to worry about. Both extremes are wrong. Certainly global disaster isn't just around the corner. On the other hand, with the introduction of any remarkable new technology, unforeseen consequences are inevitable. One possible consequence is addressed in detail by Charles C. Mann in this issue'
s cover story, \Goes Wild\Mann reveals that crops genetically engineered to produce or resist pesticides could interbreed with wild plants, giving rise to \weeds\that could be very hard to eradicate and might choke food crops. And the fact is that science can't yet tell us whether to be alarmed. Why are we still in ignorance on this important issue? One reason is that the biologists who engineer genes into plants aren't trained to think about the whole organism and its habitat; they're molecular folk, lacking an ecological perspective. Another reason is the patchwork of US regulatory agencies that govern agricultural biotech; the Food and Drug Administration (FDA), the Environmental Protection Agency (EPA), and the Department of Agriculture (USDA). Mann writes that none of these agencies is responsible for superweeds, which could grow between the bureaucratic cracks. The FDA doesn't look at plants engineered to express pesticides, because pesticides are exempt from the agency's reach. The EPA is required to treat such foods as pesticides and simply establish human tolerances for each compound. USDA tries to make sure the crop grows as the producer says it will. There's only one thing omitted from this patchwork; the public interest. To stitch it back in two things are needed. One is additional research, from biotech companies and the federal government on the ecological consequences of genetic engineering. The other is a revision of the regulatory framework to make at least one of the agencies responsible for testing the environmental consequences of agribiotech. These changes would acknowledge the growing impact of this remarkable new technology and help us steer a course between wrongheaded extremes.
The author thinks that the biologists who engineer genes into plants ______.
A . are nothing more than any other substances because they are made of molecule too
B . pay special attention to living things and their relation to their environment C . insert the genes of one species among the genes of another and test the environment consequences
D . modify the genes of our food crops without considering the influence on the whole organism
正确答案:modify the genes of our food crops without considering the influence on the whole organism
题目详解:了解作者对biologists的总的看法后再做答。作者的观点是：the biologists who engineer genes into plants aren't trained to think about the whole organism and its habitat.
2. The disadvantage of the patchwork of US regulatory agencies that govern agricultural biotech is that ______.
A . one thing is omitted from the patchwork; human tolerance for pesticides B . pesticides are exempt from FDA's reach
C . there is bureaucratic cracks and the public interest is ignored D . none of these agencies is responsible for wild plants
正确答案:there is bureaucratic cracks and the public interest is ignored
题目详解:不能被一些细节的描写所蒙骗。所有细节都指向一个根本性的问题。注意这样概
括性的表达：Mann writes that none of these agencies is responsible for superweeds, which could grow between the bureaucratic cracks. 和There's only one thing omitted from this patchwork: the public interest.
3. In the last paragraph, the author thinks that ______.
A . additional research on the ecological consequences of genetic engineering should put the public interest at the core
B . to acknowledge the growing impact of the genetic engineering is to be ready for global disaster
C . it's necessary to establish new agencies to take responsibilities for testing the environmental consequences of agribiotech
D . it's necessary to stitch the public interest in wrongheaded extremes
正确答案:additional research on the ecological consequences of genetic engineering should put the public interest at the core
题目详解:要理解：There's only one thing omitted from this patchwork: the public interest. To stitch it back in two things are needed. One is additional research也就是说在试验研究中要考虑公众利益。
4. Which of the following statements is true of \ A . Superweeds could eradicate food crops.
B . Superweeds could hinder food crops' growth. C . Superweeds could grow between cracks.
D . Crops genetically engineered to resist pesticides could make superweeds grow high.
正确答案:Superweeds could hinder food crops' growth.
题目详解:文中句子：crops genetically engineered to produce or resist pesticides could interbreed with wild plants, giving rise to \that could be very hard to eradicate and might choke food crops.是说基因工程抗虫的作物与野草杂种繁殖，产生superweeds, 这种superweeds可能很难斩草除根，并阻碍农作物的生长。
\is a word that is used carelessly today. It is used to refer to matters of taste, belief, and judgment. This casual use would probably cause little confusion if people didn't attach too much importance to opinion. Unfortunately, most to attach great importance to it. \have as much right to my opinion as you to yours, '' and ''Everyone's entitled to his opinion, '' are common expressions. In fact, anyone who would challenge another's opinion is likely to be branded intolerant.
Is that label accurate? Is it intolerant to challenge another's opinion? It depends on what definition of opinion you have in mind. For example, you may ask a friend “what do you think of the new Ford cars?\And he may reply, \my opinion, they're ugly.\In this case, it would not only be intolerant to challenge his statement, but foolish. For it's obvious that by opinion he means his personal preference, a matter of taste. And as the old saying goes, ''It's pointless to argue about matters of taste.\
But consider this very different use of the term. A newspaper reports that t
he Supreme Court has delivered its opinion in a controversial case. Obviously the justices did not shale their personal preferences, their mere likes and dislikes, they stated their considered judgment, painstakingly arrived at after thorough inquiry and deliberation.
Most of what is referred to as opinion falls somewhere between these two extremes. It is not an expression of taste. Nor is it careful judgment. Yet it may contain elements of both. It is a view or belief more or less casually arrived at, with or without examining the evidence.
Is everyone entitled to his opinion? Of course, this is not only permitted, but also guaranteed. We are free to act on our opinions only so long as, in doing so, we do not harm others.
________________________________________
1. Which of the following statements is TRUE, according to the author? A . Free expression of opinions often leads to confusion. B . Everyone has a right to hold his own opinion.
C . Most people tend to be careless in forming their opinions. D . Casual use of the word \often brings about quarrels. 提交的答案:Everyone has a right to hold his own opinion. 正确答案:Everyone has a right to hold his own opinion.
题目详解:根据问题中?四个选项?的提示，从文章最后一段第2句\course, this is not only permitted, but guaranteed\判断出选项中的\has a right to hold his own opinion.\与本句语义相关。
2. According to the author, who of the following would be labeled as intolerant? A . Someone who values only their own opinions.
B . Someone who turns a deaf ear to others' opinions. C . Someone whose opinion harm other people. D . Someone who can't put up with others' tastes.
提交的答案:Someone who can't put up with others' tastes. 正确答案:Someone who can't put up with others' tastes.
题目详解:以问题中\be labeled as intolerant\为信息点，从第2段倒数第2句\would not only be intolerant to challenge his statement, but foolish\判断出选项中的\omeone who can't put up with others' tastes\与本句含义相关。
3. The new Ford cars are cited as an example to show that ________. A . personal tastes are not something to be challenged B . it is foolish to criticize a famous brand
C . one should not always agree to others' opinions
D . it is unwise to express one's likes and dislikes in public 提交的答案:personal tastes are not something to be challenged 正确答案:personal tastes are not something to be challenged
题目详解:根据第2段最后一句\pointless to argue about matters of taste\，看出作者以\new Ford cars\为例要说明的问题。选项中的\tastes are not something to be challenged\符合题意。
4. Considered judgment is different from personal preference in that ________. A . it is based on careful thought
B . it is a result of a lot of controversy C . it is stated by judges in the court D . it reflects public like and dislikes
提交的答案:it is based on careful thought 正确答案:it is based on careful thought
题目详解:根据第3段最后一句\their considered judgment, painstakingly arrived at after thorough inquiry and deliberation\判断出，选项中的\is based on careful thought\切题。
5. As indicated in the passage, being free to act on one's opinion ________. A . means that one can impose his pre6ereaccs on others
B . doesn't mean that one has the right to charge others without evidence C . doesn't mean that one has the right to do things at will D . means that one can ignore other people's criticism
提交的答案:doesn't mean that one has the right to do things at will 正确答案:doesn't mean that one has the right to do things at will
题目详解:问题中\free to act on one's opinion\指的是最后一段的最后一句\so long as, in doing so, we do not harm others\由此，可以看出选项中的\mean that one has the right to do things at will\和本句的语义相关。
All that we really need to plot out the future of our universe are a few good measurements. This does not mean that we can sit down today and outline the future course of the universe with anything like certainty. There are still too many things we do not know about the way the universe is put together. But we do know exactly what information we need to fill in our knowledge, and we have a pretty good idea of how to go about getting it.
Perhaps the best way to think of our present situation is to imagine a train coming into a switchyard. All of the switches are set before the train arrives, so that its path is completely determined. Some switches we can see, others we cannot. There is no ambiguity if we can see the setting of a switch; we can say with confidence that some possible futures will not materialize and others will. At the unseen switches, however, there is no such certainty. We know the train will take one of the tracks leading out, but we have no idea which one. The unseen switches are the true decision points in the future, and what happens when we arrive at them determines the entire subsequent course of events.
When we think about the future of the universe, we can see our \many billions of years into the future, but after that there are decision points to be dealt with and possible fates to consider. The goal of science is to reduce the ambiguity at the decision points and find the true road that will be followed. ________________________________________
1. According to the passage, it is difficult to ascertain the distant future of the universe because we ______.
A . are not sure how the universe is structured B . have too many conflicting theories