I ______ my homework, don't talk with me. [ ]
A. am doing
B. is doing
C. do
D.can do
答案:A
可能的诊断为
A.癫痫,阵挛性发作
B.癫痫,肌阵挛发作
C.多发性抽动
D.婴儿痉挛症
E.低钙惊厥
不等式(x+1)(2-x)≤0的解集为[ ]
A.[-2,1]
B.[-1,2]
C.(-∞,-1]∪[2,+∞)
D.(-∞,-2]∪[-1,+∞)