()是信息搜集、积累的一种方法。
A.调查研究
B.查阅资料
C.经验交流
D.有针对性地搜集
参考答案:D
确诊肺结核的依据是()
A.结核中毒症状
B.血沉增快
C.结核菌素试验阳性
D.痰检找到结核菌
E.胸部X线片示浸润性改变
--- Everybody is playing outside. Can I join them, Mom?
--- _______ Not until you have finished practicing the piano.
A.Why not?
B.Will you?
C.I hope so
D.I’m afraid not.