题目

Mike arrived at the meeting ________ at ten o'clock, as it was scheduled, not a minute early or late. A. flexibly               B. punctually         C. approximately          D. temporarily 答案：B小欣在池塘中发现一种生物如图，想了解这种生物的信息，他可以查看的书籍是（　　）A.《昆虫学》B.《环节动物》C.《鱼的分类》D.《无脊椎动物学》