题目内容

n. the thin white layer of ice that forms when the temperature drops below 0'C;

A. heir
B. hare
C. frost
D. governor

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adj. real; exactly what it appears to be; not artificial

A. influential
B. gaseous
C. genuine
D. honourable

n. detailed information on how to do or use sth

A. instruction
B. institution
C. frequency
D. friction

n. the rate at which sth happens or is repeated; the fact of sth happening often

A. geometry
B. grocery
C. frequency
D. fragment

n. a baby or very young child;

A. frost
B. hedge
C. infant
D. hazard

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