单项选择题

Our ancestors celebrated（）birth of（）child by giving away red eggs.

A. /; a
B. /; the
C. the; a
D. the; the

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单项选择题
The speed at which an animal lives is determined by（）the rate at which it uses oxygen.

A. measuring
B. assessing
C. surveying
D. pleasing
单项选择题
In the distance they saw a（）house.

A. little old grey
B. grey old little C. old little grey
D. old grey little
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