单项选择题

One of the reasons why VCRs are so difficult to use is that ________.

A．the designers are often insensitive to the operational complexities of their machines
B．the range of features provided is unlimited
C．there is no ideal way of controlling quality
D．their designers often ignore the complaints of their users

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热门试题

单项选择题

According to the passage, before a VCR is sold on the market its original model should be tried out ________.

A．among ordinary consumers who are not technically minded
B．among people who are technically minded
C．among experienced technicians and potential users
D．among people who are in charge of public relations

单项选择题

Experiments by scientists have shown that when people evaluate individuals on certain attributes,______.

A．they observe the principle that beauty is only skin-deep
B．they do not usually act according to the views they support
C．they give ordinary-looking persons the lowest rating
D．they tend to base their judgment on the individual’s accomplishment