下列疾病引起的头痛最剧烈的是 ()
A.三叉神经痛
B.脑肿瘤
C.肺性脑病
D.高血压
E.鼻窦炎
参考答案:A
169. The people performing all play different _______ and three of them sing, too.
A.tools
B.musical machines
C.instruments
D.Means
生态工程