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【单选题】
经验法则表明,当一组数据对称分布时 , 在平均数加减1个标准差的范围内大约有A.
68%的数据
B.
95%的数据
C.
99%的数据
D.
80%的数据
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【简答题】A．One is safe if he is very careful. B．Hi-tech safety equipment ensures one's safety. C．A lot of people do rock-climbing and they are OK. D．There are no erous places nearby to do rock-climbing.
【单选题】I couldn’t afford the ticket, so I had to watch the __________TV broadcast of Sun Nan’s concert at home.
A.
lively
B.
live
C.
alive
D.
living
【单选题】Nuclear energy is an efficient and convenient substitute for conventional forms of energy which were found in special geographical locations. Large amounts of 【B1】______ and effort are required to 【B2...
A.
capital
B.
incentive
C.
interest
D.
currency
【简答题】Listen to the passage and fill in the missing words: Exercise 2: Blank filling. 1. The cost of the hardware and computer software program is 1)___________ . 2. Kyra Constam of Blue Goji says the virtu...
【单选题】I know “time is knowledge”, but I never seem to have enough of ____. So I am working hard to save them.
A.
both
B.
either
C.
neither
D.
none
【单选题】I study hard ________ I may not fail in the examinations. [ ]
A.
so as to
B.
in order to
C.
in order
D.
so that
【单选题】I had trouble in understanding the French, so I got the English ______ of the book from the library and read it.
A.
message
B.
theory
C.
version
D.
presentation
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