In various parts of the world, the devout participate enthusiastically in public procession during the major events of the liturgical year.
A.pious
B.serious
C.diseased
D.misled
微机系统与外部交换信息主要是通过______。
A:输入输出设备
B:键盘
C:光盘
D:内存储器
When in his rebellious years, that is when he was sixteen or eighteen, Frank Anderson ______ going around with a strange set of people and staying out very late.
A.took to
B.took up
C.took on
D.took in
森林脑炎病毒的传播媒介是()
A.蚊
B.蜱
C.蚤
D.白蛉
E.虱
When plutonium undergoes fission, its atoms break apart, giving off a great deal of energy
A.recoil
B.soften
C.fester
D.split
登革病毒根据抗原性不同,分为_________个血清型,各型病毒间有_________。