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【简答题】7-6 Show how you would use the Friedel-Crafts acylation, Clemrnensen reduction, synthesi s to prepare the following compounds: 如何能过F-C酰基化和 Clemrnensen还原合成以下化合物？
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•Choose the best word to fill in each gap.
•For each question 21-30, mark one letter A, B, C or D.
According to certain beer commercials, the contemporary version of success consists in moving up to a premium brand that costs a dime or so more per bottle. Credit-card companies would have you (21) success inheres in owning their particular piece of plastic.
Under the flag of success, modern-style, liberal arts colleges are withering (22) business schools are burgeoning... and yet even business schools are having an increasingly hard time finding faculty members, because teaching isn't (23) "successful" enough. Amid a broad consensus that there is a glut of lawyers and an epidemic of strangling litigation, record numbers of young people continue to flock to law school (24) , for the individual practitioner, a law degree is still considered a safe ticket.
Many, by external standards, will be "successes". Yet there is a deadening and dangerous flaw in their philosophy: It has little room, little sympathy and less respect for the noble failure, for the person who (25) past the limits, who aims gloriously high and falls unashamedly (26) .
That sort of ambition doesn't have much place in a world where success is proved by worldly reward (27) by accomplishment itself. That sort of ambition is increasingly thought of as the domain of irredeemable eccentrics, of people who haven't quite caught on—and there is great social pressure not to be one of them.
The irony is that today's success-chasers seem obsessed with the idea of not settling. Yet in doggedly (28) the rather brittle species of success now in fashion, they are restricting themselves to a chokingly narrow swath of turf along the entire (29) of human possibilities. Does it ever (30) to them that, frequently, success is what people settle for when they can't think of something noble enough to be worth tailing at？
(21)
A．believe
B．believed
C．believing
D．to believe
A、A. Sui, Tang
B、B. Tang, Song
C、C. Song, Yuan
D、D. Ming, Qing
A、A
B、B
C、C
D、D
It’s a sad reality—our desire to avoid interacting with other human beings—because there’s 2 to be gained from talking to the strange r standing by you. But you wouldn’t know it， 3 into your phone. This universal armor sends the 4 ：“Please don’t approach me.”
What is it that makes us feel we need to hide 5 our screens？
One answer is fear, according to Jon Wortmann, executive mental coach We fear rejection，or that our innocent social advances will be 6 as“creep,”We fear we’II be 7 We fear we’II be disruptive Strangers are inherently 8 to us，so we are more likely to feel 9 when communicating with them compared with our friends and acquaintances To avoid this anxiety, we 10 to our phones.“Phones become our security blanket，“Wortmann says.”They are our happy glasses that protect us from what we perceive is going to be more 11 .”
But once we rip off the bandaid，tuck our smartphones in our pockets and look up，it doesn’t 12 so bad. In one 2011 experiment，behavioral scientists Nicholas Epley and Juliana Schroeder asked commuters to do the unthinkable: Start a 13 . They had Chicago train commuters talk to their fellow 14 . "When Dr.Epley and Ms. Schroeder asked other people in the same train station to 15 how they would feel after talking to a stranger, the commuters thought their 16 would be more pleasant if they sat on their own," the New York Times summarizes. Though the participants didn&39;t expect a positive experience, after they 17 with the experiment, "not a single person reported having been snubbed.”
18 , these commutes were reportedly more enjoyable compared with those sans communication, which makes absolute sense, 19 human beings thrive off of social connections. It&39;s that 20 : Talking to strangers can make you feel connected.
1
A.ticket
B.permit
C.signall
D.record
2
A.nothing
B.link
C.another
D.much
4
A.message
B.cede
C.notice
D.sign
8
A.unreasonable
B.ungreatful
C.unconventional
D.unfamiliar
9
A.comfortable
B.anxious
C.confident
D.angry
10
A.attend
B.point
C.take
D.turn
1
A.dangerous
B.mysterious
C.violent
D.boring
12
A.hurt
B.resis
C.bend
D.decay
13
A.lecture
B.conversation
C.debate
D.negotiation
14
A.trainees
B.employees
C.researchers
D.passengers
15
A.reveal
B.choose
C.predictl
D.design
16
A.voyage
B.flight
C.walk
D.ride
17
A.went through
B.did away
C.caught up
D.put up
18
A.In turn
B.In particular
C.In fact
D.In consequence
19
A.unless
B.since
C.if
D.whereas
3
A.beaten
B.guided
C.plugged
D.brought
20
A.funny
B.simple
C.Iogical
D.rare
5
A.under
B.beyond
C.behind
D.from
6
A.misinterprete
B.misapplied
C.misadjusted
D.mismatched
7
A.fired
B.judged
C.replaced
D.delayed
A. People who are thinking about changing careers are often afraid of what will happen if they quit their job. Will they find another one？ Will they like another field as well as the one they are in now？ Will they be able to grow and advance in a new organization？
B. As these questions come to mind, they should try to figure out the answers so they can reach a decision. Although there is a high rate of unemployment in some countries, there are usually jobs for skill ed workers who ca use computers or other equipment. Those who have specialized training in these areas can generally find a position without too much effort.
C .The question of whether they' II like another field more than their current one is also a crucial one. While it' s nice to dream about having another job , the reality may be that they aren't suited for it. For example , if an architect likes to cook but has no idea about how to run a business , it may be risky for him to open a restaurant. He can cook for his friends on weekends and satisfy his dreams of being a chef in that way.
D. Another good way for a person to find out if she will be successful in a new field is to try it out as a part-time job. Being an event planner sounds glamorous but helping friends with parties or weddings might show her that it also very stressful. However, if she has the creativity and organization necessary for such a position , she can continue to plan events for friends until she builds up a reputation. Then she can leave her current job to look for a job in event planning knowing that she' ll be successful in this area.
E. Once a person has found his or her specialty and decides on the change , it' s necessary to stick with it until the business gets off the ground. This usually takes about five years. If the move has been from one company to another, the person should stay until it is clear he is doing a good job and can advance to a higher position. Following this advice will make the transition smoother and the career change successful.
For each question , choose the best answer based on the reading sage. Write A , B , C or D on your Answer Sheet.
21. According to the reading , people who think about changing careers generally____.
A. quit their jobs
B. are afraid of quitting their jobs
C. find another one right away
D. grow and advance in a new organization
22. There is a high rate of unemployment in some countries , but skilled workers____.
A. lose their jobs
B. try to reach a decision
C. use computers
D. with training can still get jobs
23. If a person dreams about doing another job,____.
A. he is suited for it
B. he can run a business
C. he still may not be able to do it
D. he will be satisfied as a chef
24. Having a part-time job____.
A. is a good way to try another career
B. sounds glamorous
C. is very stressful
D. builds up a person' s career
25. You should stay in a new career at least fiv years because____.
A. it' s your specialty
B. you moved from one company to another
C. you can do a good job and advance in that time
D. the transition will smoother
Biologists today don’t expect that anyone will find a magical fountain of youth.Growing older is a natural part of the life cycle that can’t be reversed.As human beings grow older, organs such as the heart and lungs may stop functioning properly.Sight and hearing may become weak.And the human body becomes more likely to come down with serious illnesses from which it cannot recover.
Considered together, changes that bring about the decline of an organism are called aging.Because of aging, many biologists believe that there may be a maximum age limit to which even the healthiest organisms can live.For human beings, this maximum age limit is about 110 years.
Perhaps the most important thing that you can learn from your study of human biology is that you have a lot of control over the aging process in your own life.In fact, within our control are many physical and mental factors that have much to do with aging.For example, each of us, as recent research indicates, can do many things to help prevent heart and vessel disease, which causes half the death each year in the United States.We can avoid eating a lot of fatty meat.Eating too much of these types of animal fats can lead to the clogging and hardening of blood vessels.We can cut back on smoking and hopefully quit entirely.We can limit the amount of alcohol we drink and the amount of sugar we eat.We can exercise regularly and strengthen the heart and other organs.And we can remember to take time out each day for ourselves, time just relax.Exercise, recreation and relaxation all reduce stress – inner tension that is hard on all body organs.
One final thing we can do is to try to keep aware of advances made in health education.Information is often available free of charge from health clinics or schools.
1.Which of the following is the leading cause of death in the United States?
A.Heart disease.
B.Cancer
C.Alcohol
D.Smoking
2.What happens as people grow older?
A.They dream of a magic pill to help them live a happy and long life
B.They come down with serious illnesses
C.Their organs become weak and may stop working properly
D.Their blood vessels become clogged
3.In the opinion of biologists, _________.
A.the aging process can be reversed
B.the aging process can be controlled and slowed down
C.the aging process can be got rid of
D.the aging process can go beyond its limit
4.We can slow down the weakening of all our body organs by ______.
A.not eating animal fat
B.limiting drinking and smoking
C.exercise, recreation and relaxation to reduce stress
D.preventing the clogging and hardening of blood vessels
5.Besides physical and mental factors, which of the following also contributes to living a long and healthy life according tot the passage?
A.Health education
B.Traditional medicine
C.artificial organs
D.The invention of magic pills
A、I, II, III
B、II, III
C、I, III
D、II
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