719.You're telling me a lie. Your facial expression has __
A.given you away
B.given you out
C.given you off
D.given you up
720.Modern forms of transportation and communication have done much to ____ the isolation of life in Alaska.
A.break through
B.break down
C.break into
D.break out
719.答案是A;
give away赠送,颁发,泄露,告发;give out分发,公布,用完,耗尽;give off发出,放出;give up放弃,自首。此处意为你脸上的表情出卖了你。
720.答案是A;
break through突破,克服,挣脱而出;break down机器出故障,中断,分解;break into闯入,打 断,突然中断;break out突然发生,爆发。