题目内容

A．untilB．byC．duringD．after

A. until
B. by
C. during
D. after

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A．exploringB．convictingC．exploitingD．extending

A. exploring
B. convicting
C. exploiting
D. extending

A．in briefB．in effectC．after allD．for example

A. in brief
B. in effect
C. after all
D. for example

A．modelB．evolutionC．processD．return

A. model
B. evolution
C. process
D. return

A．whileB．forC．soD．since

A. while
B. for
C. so
D. since