答案:A
My brother is good at _ model planes. [ ]
A. make
B. making
C. made
D. to make
按甲类管理的乙类传染病是()
A.艾滋病
B.流行性斑疹伤寒
C.人感染高致病性禽流感
D.流行性感冒
E.霍乱