1 . Warm milk is the ideal breeding(繁殖) ground for ________ (bacterium). (所给词的适当形式填空)
您最近半年使用:0次
2 . It has been discovered that ________ (细菌) reproduce by dividing and making copies of themselves. (根据汉语提示单词拼写)
您最近半年使用:0次