题目内容

Studying __________ has made him a more effective salesperson because he understands what motivates people to buy things.

A. psychology
B. site
C. launched
D. website

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The __________ of the space shuttle is planned for tomorrow.

A. launch
B. psychology
C. launched
D. contacted

Our dentist uses only the best __________ equipment.

A. coded
B. launched
C. dental
D. psychology

The __________ on the mountain would be a good place for a ski area.

A. dental
B. launch
C. site
D. psychology

She __________ her campaign for president.

A. dental
B. psychology
C. contact
D. launched

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