题目内容
（请给出正确答案）
From Hellman's remark, we can see that______.
A．full use has been made of the wisdom of older people.
B．the wisdom of older people is not valued by American society.
C．older people are no less intelligent than young people.
D．the wisdom of older people is of great value to American society.
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更多“From Hellman's remark, we can …”相关的问题
A．It's overpriced.
B．It makes people crazy.
C．It's different from other coffee houses' coffee.
D．All the coffee is from Brazil.
A．He's taking a break from studying.
B．He has already finished studying,
C．He was assigned to watch a program by his professor.
D．He's finding out some information for a friend.
A．People still talk a lot about it.
B．Fewer people watched Susan's programme from then on.
C．Anna's photographs appeared frequently in newspapers.
D．The number of viewers of her programme that day increased by millions.
设有学生表S(学号,姓名,性别,年龄)，查询所有年龄小于等于18岁的女同学、并按年龄进行降序排序生成新的表WS，正确的SQL命令是______。
A．SELECT * FROM S WHERE 性别='女' AND 年龄＜=18 ORDER BY 4 DESC INTO TABLE WS
B．SELECT * FROM S WHERE 性别='女' AND 年龄＜=18 ORDER BY 年龄 INTO TABLE WS
C．SELECT * FROM S WHERE 性别='女' AND 年龄＜=18 ORDER BY '年龄' DESC INTO TABLE WS
D．SELECT * FROM S WHERE 性别='女' OR 年龄＜=18 ORDER BY '年龄' ASC INTO TABLE WS
It can be learned from the passage that oil exploitation beneath ANWR's frozen earth
A．remains a controversial issue
B．is expected to get under way soon
C．involves a lot of technological problems
D．will enable the U.S. to be oil independent
How did Alfred Russel Wallace's view of peacocks differ from that of Darwin？
A．He thought that a peahen's choice of mate was practical.
B．He believed that animals could experience emotions.
C．He believed animals appreciated beauty for its own sake.
D．He believed that the peacock's train must have a protective function.
设有关系R(A，B，C)和S(C，D)。与SQL语句Select A，B，D From R，S Where R．C=S．C等价的关系代数表达式是
A．σR．C=S．C(πA,B,D(R×S))
B．πA．B．D(σR．C =S．C(R×S))
C．σR．C=S．C((πA，BR)×(πDS))
D．σR．C=S．C(πD((πA，BR)×S))
Coal, oil, natural gas, and all other fuels are stored-up energy from the sun. Some was collect ed by this season's plants as carbon compounds. Some was stored by plants and trees ages ago.
Even waterpower derives from the sun. Water turned into vapor by the sun falls as rain. It courses down the mountains and is converted to electric power.
Light transmits only the energy that comes from the sun' s outer layers, and much of this energy that is directed toward the earth never arrives. About nine-tenths of it is absorbed by the atmosphere of the earth. In fact; the earth itself gets only one half-billionth of the sun' s entire output of radiant energy.
All the useful energy at the surface of the earth comes ______.
A．directly from the sun
B．from the sun' s activity
C．from energy stored by the sun
D．from radiation of the sun
According to the passage, an interview assessment form. is used by the panel to______
A．inform. people of new appointments
B．ask for recommendations from managers
C．study the applicant's age and education
D．judge an applicant's performance during the interview
What can we learn from the story？
A．Both the man and his wife were football fans.
B．Neither the man nor his wife liked the game.
C．The man's wife didn't like any football games.
Sarah earns enough money from her painting to
A．give up her computing job.
B．pay for her flat and car.
C．pay for her artist's materials.
