问题
单项选择题
固体废弃物按危害状况可分为有毒有害废弃物和一般废弃物。有毒有害废弃物是具有腐蚀性、反应性、有毒性、传染性、爆炸性和什么性之一的废弃物（）。
A.放射性
B.浸出毒性
C.易燃性
D.水生生物毒性
E.吸入毒性
答案
参考答案：C
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固体废弃物按危害状况可分为有毒有害废弃物和一般废弃物。有毒有害废弃物是具有腐蚀性、反应性、有毒性、传染性、爆炸性和什么性之一的废弃物（）。
A.放射性
B.浸出毒性
C.易燃性
D.水生生物毒性
E.吸入毒性
参考答案：C
Last year, some groups of students in their community made a survey (调查) about “How do people spend their free time? ” The following diagrams(图表) show some results（结果） of it: Diagram (1): Hours for people of different ages who search the Internet in a week.
Diagram (2): Different days people go to the library. (library attendance出席)  Diagram (3): Different programs (节目) people like.  小题1:People aged spend the most time searching the Internet every week.
小题2:How many people go to the library on Monday?
小题3:Which program do people like best?
小题4:The three diagrams show us the results of a survey about .
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