单项选择题

Tebbut’s own product, called Brainstorm, is a sophisticated software ’ideas organizer’ that is cheap, easy to use and quite helpful.()

A. different
B. excellent
C. complex
D. old

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My life is more precious to me than my property.()

A.valuable
B. profitable
C. dear
D. noble

单项选择题

I catch cold now and then.()

A. always
B. occasionally
C. constantly
D. regularly

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