What did the real cockroaches do when the robot-roaches made an inappropriate decision？
A. Some of them headed toward the dark areas.
B. Many followed the collective to a lighter shelter.
C. All of them followed the collective to a lighter shelter.
D. Most of them stayed still.
固体废弃物的管理是指控制其污染和实行资源化。按其来源不同,主要分为工业废物、矿业废物、农业废物、城市垃圾、放射性废物和传染性的废物等几大类。()
应对压力的有效反应()
A逃避压力
B去改变自己
C与其他有过类似经验的人交流
D面对更大的压力去挑战
发展无公害农产品、绿色食品和有机农产品是我国一项开创性事业，要在不断探索和创新中推进。()
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