单项选择题

The police were polite, too. because ______.

A．they didn't think the man was a thief
B．the man was old and very rich
C．they were not sure whether the man was the thief they wanted
D．they doubted that the man was responsible for a number of recent robberies

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热门试题

单项选择题

The biggest advantage of this new system is that ______.

A．it reduce the cost of recycling
B．it saves time and space
C．it saves money for people in high rises
D．it makes better use of the existing recovery equipment

单项选择题

The purpose in writing this text is ______.

A．to encourage people to recycle their rubbish
B．to introduce a recycling system for high rises
C．to describe the use of computer technology in recycling
D．to explain the need for rubbish collection in high rises