问题 填空题

某中学探究性学习小组对洞庭湖的水质状况进行了有关检测.

(1)取水样,静置后过滤.过滤操作中需要用到的玻璃仪器有漏斗、烧杯和______.

(2)若要测定洞庭湖水的酸碱度,可以选______(填字母).

A.紫色石蕊试液  B.无色酚酞试液 C.pH试纸

(3)近几年国家加大了对污水整治的力度,请你提出防止水体污染的合理化建议______(任填一条).

答案

(1)过滤操作中需用到的玻璃仪器有漏斗、烧杯和玻璃棒,题中缺玻璃棒.故答案为:玻璃棒

(2)测定水的酸碱度属于粗略的定量测量,应用pH试纸,紫色石蕊试液和无色酚酞试液只能定性地判断溶液的酸碱性.故答案为:C

(3)防止水体污染的措施很多,如:①禁止工业废水任意排放  ②禁止生活污水任意排放  ③合理使用农药化肥  ④污水处理达标后排放,故答案为:污水处理达标后排放

完形填空
完形填空
     Someday soon, you might want to get ajob. Kids can get to  1the work
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