疟疾
A.强制管理的传染病 B.监测管理的传染病 C.严格管理的传染病 D.不必进行管理的传染病 E.不必向有关卫生防疫专业机构报告疫情
参考答案:C
免疫酶技术(immunoenzymetechnic)
My grandmother _________ a good memory, but now she always forgets things.
A.used to have
B.used to having
C.were used to have
D.are used to having