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【判断题】
算法的正确与否必须满足确定性和能行性,但不一定达到有穷性。A.
正确
B.
错误
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举一反三
【单选题】Dick had to work after class and during his holidays because ______.
A.
his parents told him to make more friends
B.
he wanted to become a rich man
C.
he couldn't go on with his studies without enough money
D.
he had nothing to do at home
【单选题】Craig, a marketing manager at HeliZone Inc., rarely takes initiative or suggests new ideas during project meetings. He does his work halfheartedly and needs to be guided by his manager on a regular ba...
A.
passive follower
B.
alienated follower
C.
conformist follower
D.
pragmatist follower
【简答题】Part C Listen to the passage three times and supply the missing information. On June 28, 2008, amid cheers and tears 52-year-old Gates said good-bye to his 1) —— employees. The following is his clos...
【简答题】33-35 Passage Three 33. A . It influences Americans' value of life. B . It expresses Americans' feeling vividly. C . It evolves with the development of America. D . It reflects Americans' preoccupatio...
【单选题】能证明碳酸比硅酸酸性强的实验事实是（ ）
A.
CO 2 是气体，SiO 2 是固体
B.
高温下能发生反应：Na 2 CO 3 +SiO 2 高温 . Na 2 SiO 3 +CO 2 ↑
C.
CO 2 溶于水生成碳酸，而SiO 2 却不溶于水
D.
CO 2 通入NaSiO 3 溶液中有胶状沉淀生成
【单选题】能证明碳酸比硅酸酸性强的实验事实是
A.
H 2 CO 3 比H 2 SiO 3 受热易分解
B.
高温下能发生反应Na 2 CO 3 ＋SiO 2 Na 2 SiO 3 ＋CO 2 ↑
C.
CO 2 能溶于水生成碳酸，而SiO 2 却不溶于水
D.
CO 2 通入Na 2 SiO 3 溶液中有胶状沉淀生成
【单选题】Stevea typicel Amerien, stays home on workday. He plugs into a computer terminal in order to hook up with the office and he sends and recieves work during the day by electronic mail and a faxmodem. ...
A.
More and more, the inventions of modern technology seem to be cutting us off from contact with our fellow human beings.
B.
The world of business is one area in which technology is isolating us...
C.
Another area that technology is changing is entertainment....
D.
Education is a third important area in which technology is separating us from others. ...
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