One reason for malaria to be widespread now is that ______ Lanzaro is confident that scientists can block transmission of malar

admin2006-07-06  53

问题 One reason for malaria to be widespread now is that ______
Lanzaro is confident that scientists can block transmission of malaria to humans because ______

选项 A、natural mosquito populations do not change
B、scientists have succeeded with birds and mice
C、foreign genes always go where they are required
D、lab-raised mosquitoes will not be resistant to drugs

答案B

解析 参见第47题解释。
转载请注明原文地址:https://jikaoti.com/ti/EfgjFFFM
0

随机试题
最新回复(0)