单项选择题

Today investigators are still far from______a master map of the vasculature of the heart.

A．constituting
B．decoding
C．drafting
D．encoding
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单项选择题
Family-planning clinics give out______ advice to people who have decided to limit the size of their families.
A．insensitive
B．interrogative
C．contraceptive
D．communicative
单项选择题
Caffeine is the______drug that will just about get you out of the door on time to catch the bus.
A．miracle
B．myth
C．trick
D．legend
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