卡氏肺孢子虫的生活史()卫氏并殖吸虫的生活史()
A.需要1个中间宿主
B.需要两个中间宿主
C.无中间宿主
D.需要昆虫媒介
E.需要肥沃的土壤
参考答案:C,B
The man who provided relevant information would be offered a(n) _____ of $5000 for the arrest of the murderer, according to the news on TV last night.
A.award
B.reward
C.prize
D.price
软件工程的7条原则是什么?