赞题库-背景图
单项选择题

This passage is about______.

A．marketing of software
B．one version of the movie Close Encounters of the Third Kind
C．major computer companies
D．impact of TV commercials
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热门试题

单项选择题The narrator of the following piece is a(n)______.

A．writer
B．Englishman
C．woman judge
D．lawyer

单项选择题What is most likely to cause insufficient suction in a vacuum cleaner

A．The dust bag is full.
B．The hoses are clogged by dirt.
C．The speed of the fan's whirring is too low.
D．The fan chamber is too small.