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【判断题】
为了保证细胞状态,应每天观察3次以上。A.
正确
B.
错误
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举一反三
【单选题】According to the passage, ______ has become the driving force for the development of telephone system?
A.
information technologies
B.
Internet
C.
PC
D.
convergence of telecommunications technologies
【单选题】Technology has been a driving force of the increased flows of goods and money in that ______ .
A.
it has lowered the costs of communication and computing
B.
it has removed all the natural barriers of time and space
C.
it has reduced the barriers of foreign trade
D.
it has enabled most countries to welcome foreign capital
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