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【简答题】
基础训练篇（12） We all know that computers have played and (1)__________ play a very important part (2)___________ various fields. In personal lives, computers can do lots of work. It can carry (3)___________ people’s instructions. In agriculture, computers are used (4)_____________ control the (5)__________(grow) conditions of vegetables and other plants. In transportation(交通运输), computers can work out the best distance (6)__________ trains and operate the trains instead (7)____________ human beings. In the fields of education, health and scientific research, computers are important, (8)___________. People use them to store information (9)______________ records. Because of the computers, life is easier and (10)________ convenient for people.
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举一反三
【单选题】有关下列说法正确的是（ ）
A.
难溶于水的电解质一定是弱电解质
B.
某物质若不是电解质，就一定是非电解质
C.
H 2 SO 4 的摩尔质量是98g
D.
侯氏制碱法中的“碱”是Na 2 CO 3
【单选题】下列说法正确的是：（ ）
A.
强电解质的导电能力一定大于弱电解质的导电能力
B.
溶于水能导电的化合物都是电解质
C.
25℃时，0.1mol/L的盐酸中氢离子浓度大于0.1mol/L的醋酸中氢离子浓度
D.
BaSO 4 属于强电解质，所以其水溶液导电能力很强
【简答题】The happy man is the man who does not suffer from either of these failures of unity, whose personality is neither divided against itself nor pitted against the world.
【单选题】下列说法正确的是 [ ]
A.
强电解质溶液的导电性一定比弱电解质溶液的导电性强
B.
BaSO 4 难溶于水，所以它是弱电解质
C.
弱电解质溶液中电离出的离子和未电离的分子共存
D.
共价化合物都是弱电解质
【单选题】Pitted against these excellent reasons for my not going to the conference were two others that finally carried the day
A.
had the day
B.
passed the day
C.
won
D.
failed
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