In the author’ s opinion, social activities should start from ______.
A. the very beginning of freshman year
B. the end of college education
C. the beginning of sophomore year
D. anytime during college
查看答案
The passage mainly tells us that ______.
A. college life is free from worry
B. college education ensures students better opportunities
C. college education enhances students’ opportunities for better jobs
D. college education is different from high school education
在产品包装上，在保证产品安全的前提下，应当尽量减少包装材料的使用，这样会减少固化废物的产生。
A. 对
B. 错
平时有必要对室外环境反复消毒吗？
A. 对
B. 错
固体废物的“三化”是指减量化、无害化和资源化。
A. 对
B. 错
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