题目内容

【C9】______

A. related
B. relation
C. relate
D. relative

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【C20】______

A. depart from
B. engage in
C. return to
D. depend on

【C18】______

A. production
B. produce
C. yields
D. efficiency

【C8】______

A. intention
B. motive
C. incentive
D. advance

【C17】______

A. department
B. fraction
C. sector
D. portion

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