单项选择题

(While) schools developing online curricula try to strike (a balance) between profits and prestige, many educators (are confusing) about their role in this (digital world).

A．While
B．a balance
C．are confusing
D．digital world
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单项选择题
Although fitness will not (guarantee) that you will live (longer), it can help you (enjoying) the years you (do live).
A．guarantee
B．longer
C．enjoying
D．do live
单项选择题
There is (few evidence) that children (in language classrooms) learn foreign languages (any better) than adults in similar (classroom situations).
A．few evidence
B．in language classrooms
C．any better
D．classroom situations
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