单项选择题

Which of the following words is the example of semantic broadening().

A. hound
B. companion
C. silly
D. girl

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单项选择题

The new words such as police officer , chairperson are created because ().

A. science and technology are developing rapidly
B. computer and internet technology are more and more popular
C. women have taken up activities formerly reserved for men
D. the children can remember them as quickly as possible

单项选择题

As science and technology develops, the word planet-friendly is coined in the () domain.

A. space travel
B. computer and internet language
C. ecology
D. IT