We should be very ________about giving our personal information to strangers. A．

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We should be very ________about giving our personal information to strangers.

A．happy

B．outgoing

C．ready

D．cautious

答案

解析

略

举一反三

I really appreciate that your help is of great _________.

A．useful

B．value

C．important

D．worth

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Owing to over-drinking．his health is ____．

A．decreasing

B．declining

C．increasing

D．promoting

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The _______age of the students in our class is about 19.

A．common

B．average

C．usual

D．ordinary

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For areas that receive regular and plentiful rainfall, such detailed crop monitoring（监测）might not be useful or ;

A．economy

B．economic

C．economical

D．economics

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He is ________ a friend to me. He is in a way my English teacher.

A．no more than

B．more than

C．not more than

D．nothing than

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