单项选择题

What started the public and Confessional concern about deceptive packaging rumpus

A．Consumers' complaint about the changes in package size.
B．Expensive packaging for poor quality products.
C．A senator' s discovery of the tricks in packaging.
D．The rise in the unit price for many products.
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单项选择题
The examples of the Challenger and Chernobyl cited by the author serve to show that ______.
A．if not given close examination, technology could be used to destroy our word
B．technology is a human creation, so we are responsible for it
C．technology usually goes wrong, if not controlled by man
D．being a human creation, technology is liable to error
单项选择题
According to the author, the introduction of the computer is a revolution mainly because ______.
A．the computer has revolutionized the workings of the human mind
B．the computer can do the tasks that could only be done by people before
C．it has helped to switch to an information technology
D．it has a great potential impact on society
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