单项选择题

The motive for scientific work is sometimes curiosity, sometimes ______, and sometimes the love for money.

A. allowance
B. agitation
C. amusement
D. ambition

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单项选择题

I won't pay $20 for the cost; it's not worth ______.

A. ail that much
B. that much all
C. that all much
D. much all that

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