女性,40岁,痰结核菌阳性的肺结核患者,考核疗效的主要指标是()。
A.胸片病灶好转
B.症状减轻或消失
C.血沉正常
D.痰菌转阴
E.以上都不是
参考答案:D
-Ten minutes ago, there __________ an eraser, a pen and some books on the desk.But now there __________ anything on it.
-Don't worry. Maybe someone put them away.
A. was, isn't
B. were, isn't
C. is, wasn't
D was, wasn't
The Tiangong-1 was sent _______ September 29th, 2011. [ ]
A. in
B. on
C. at
D. with