重症肌无力患者可合并哪些自身免疫性疾病()
A.甲状腺功能亢进
B.系统性红斑狼疮
C.类风湿性关节炎
D.恶性贫血
E.天疱疮
参考答案:A, B, C, D, E
I usually go shopping in that supermarket, because their prices are _____.
A.expensive
B.cheap
C.high
D.low
The radio is too noisy. I can't go to sleep. Would you please ___? [ ]
A. turn it up
B. turn it down
C. turn up it
D. turn down it