279.Some parents are just too protective. They want to ______ their kids from every kind of danger, real or imagined.
A.spot
B.dismiss
C.shelter
D.distinguish
280.The China National Environmental Monitoring Center ____ air quality in urban areas from levels one to five:excellent, fairly good, slightly polluted, poor and dangerous.
A.distributes
B.arranges
C.classifies
D.divides
279.答案是C;考查动词的辨析。spot发现，辨认，点缀;dismiss解散，解雇，消除顾虑;shelter 保护，庇护，为...提供避难所;distinguish 辨别，区别。shelter sb. from every kind of danger，real or imagined意为保护某人免受各种真正的甚至假想的危险。
280.答案是C;考查动词的辨析。distribute分布，散布，遍布;arrange安排;classify把…分级，分类;divide分开，隔离，划分。此处意为:把城区的空气质量分成五类，故选C。
