第一题:为了安全,在公路上行驶的汽车之间应保持必要的距离,已知某高速公路的最高限速为108km/h.假设前方车辆突然停止,后车司机发现这一情况立即操纵刹车,刹车时汽车受到阻力的大小为汽车重力的0.40倍,若司机的反应时间是0.50s,该高速公路上汽车间的距离至少应为多少米? 第一题问1:司机从发现到踩刹车,汽车前进的距离为 m.
winston churchill achieved fame for his wit, wisdom, civic duty, and abundant courage.
albert einstein and thomas edison were both very art in their childhood.
abraham lincoln's abundant courage enabled him to succeed despite all the misfortunes in his life.
sandra day o'connor was rejected from the law circuit because she was from a poor family.
according to the author, many artists, writers and stateen achieve prosperity because they are very lucky.
most cities in the country have introduced "clean air zones" _____ factories and households are only allowed to burn okeless fuel.
he knows that the ______ of social status can consume vast amounts of his time and effort.
the doctors are at a loss because so far no medicine has been found to _____ the spread of the disease.
thomas edison is often cited as an example of a great inventor who would never yield to hardships in his quest for new inventions and deserve his _____ success.
they are ______ of unconventional attitudes toward marriage and the changing roles of the sexes.
she was totally wrapped ____ in her painting whenher father came to tell her that there was a phone call for her.
when his mother was in the hospital producing his sister, he was very excited - _____ anticipation of having a cute baby sister.
most scientists in the world today firmly believe the effective means to stop global warming is to reduce emissions of air _____.
earthquakes have plagued our lives and resulted in great damage to the human beings for as long as people have ____ the earth.
miss world organizers claim on their official website that ____ are judged on qualities other than just their physical appearance.
after being grabbed off the street by nazis, audrey hepburn escaped because she was unbelievably beautiful.
as an anonymous refugee, audrey hepburn was totally baffled by life’s horrors and fragility.
audrey hepburn valued academy awards most.
when she was trying to complete her missions, audrey had to provide a lot of emotional care and was always confronted with dangerous tasks.
audrey emphasizes the inborn beauty of a person which can never be acquired in growth and cultivation.
news media worked overtime to ________ the country as open and "ready" for all nuclear discussions.
we provided information to site administrators about typical functions of ________ library programs.
we just go on in our habitual ways until we are stopped short by one of the many illnesses that ________ our civilization today.
then you do believe in god, but you guess that i do not, and you fear that the admission of your true belief would ________ your chance of employment.
mrs. cummins, very ________ in her duties, watched the whole process with a sensitive eye.
look, we're about to ________ the last and final stage of our academic careers together.
to promote particular organizational values, and encourage high levels of informal communication, the managers can attempt to lead ________ example.
one reason that i may be the last person in manhattan without a cell phone is that i ________ the excitement of coming home and finding a call light flashing.
when you get the right role, you want to stay focused; you want to ________ yourself as much as you can.
the burdensome trip described in para. 1 is to deny the benefits of modern aviation.
according to para's 2-4, we travel not because we need to, but because we want to.
people travel to leave all their troubles behind, however, ironically, their mind is most likely to solve their most difficult problems when they are in a distant place.
travelling can help loosen the cognitive chains that imprison us and can grant us new and open insights into the world around us.
that people need distance and differences for creativity is the real purpose why people travel.
it was all too easy, when one was young, to ________ the future in the excitement of the present.
it will be noted that the improved visibility of this warning light does not completely ________ the increased tendency to make an error during the night.
it is difficult to ________ of such thinking taking place without the growth and development of intellectual ability.
the world of the ________ is to do with success, status, respect, money, desires of all kinds, and fears, that lead to unhappiness.
just as women now demand for themselves greater freedom to express different ________ of themselves, so too do some men, although not nearly so many of them.
one of the features of auto-immune diseases is that they ________ within iniduals and sometimes within an inidual's family.
competition for limited resources is an inevitable feature of life so long as reproduction occurs in the context of ________ supplies.
in studying children's pictures, a wide variety of ________, personal, and cultural factors needs to be taken into account.
if the product does absorb moisture or ________ water, discard it.
the author uses the example of "an obese child" to vividly prove that westerners think chinese parents raise kids without courtesy.
the western parents want to protect their children from critici because they worry about their children's worries instead of their bad performance.
chinese parents demand perfect grades because they believe that substandard performance is a reflection that the kids do not work hard enough, and will not be successful in the future.
western parents think that children are not born because they want to come to this world. instead, their parents force life on them. children don't owe their parents anything.
according to the author, western parenting method is more beneficial to children's success in the future because parents try to respect their children's iniduality and provide a positive and nurturing environment for them.
now it is a national charity employing 20 people centrally and ________ the work of 400 coordinators employed around the country.
it is ridiculous that a man who has no claim on the world's attention should nonetheless be able to exact (强求) full ________ from his wife.
it advises artists to ________ from oking or eating while painting, to use face masks and to provide adequate ventilation (通风) by means of an extractor fan.
the committee was satisfied that minor incidents of misconduct or ________ of the chairman had been well handled by the directors within the rules.
the form of social control is more ________, aiming to reintegrate children and families into society rather than to rescue children and punish parents.
it was not simply a matter of exporting enough to pay for necessary imports, as contemporary economic ________ often suggested.
but just how long it takes for the heat to flow out will depend on how well your home is ________ and draught proofed.
what they contested was the ________ that moral reform could be achieved through a centralized program.
waller was argumentative, ________, and sometimes outspoken, but he had a sense of humor and he retained a childlike delight in science throughout his life.
it was clear that some of the disturbances were triggered by the ________ actions of local residents.