logo - 刷刷题
下载APP
【单选题】

____ is a kind of antibiotic.

A.
Polio
B.
Penicillin
C.
Insecticide
举报
参考答案:
参考解析:
.
刷刷题刷刷变学霸
举一反三

【单选题】One way to control malaria is to ____.

A.
kill the mosquitoes that carry it to humans
B.
treat the monkeys that spread the disease
C.
eat more fruit and vegetables

【单选题】Resistance means that a disease carrier ____.

A.
stops responding to medicine
B.
has been treated effectively
C.
has spread from animals to humans

【单选题】Doctors contribute to the problem of resistance by ____.

A.
ordering antibiotics for patients when the drugs are not necessary
B.
using insecticides when they are not necessary
C.
stopping the use of drugs too soon

【单选题】Diseases can spread quickly ____.

A.
when people live in uncrowded areas
B.
when animal habitats are protected
C.
when people fly from one country to another