受生物性污染的水体可引起（）
A.介水传染病
B.急性中毒
C.慢性中毒
D.公害病
E.癌症
参考答案：A
Make sentences with the words. 组词成句。
1. is this bed my cousin's (.)
2. your please make dresser (.)
3. eleven nine minus twenty is (.)
4. know now ABCs my I (.)
以说出故
