吸管法进行悬移质颗粒分析，用0.062mm孔径洗筛将试样分成两部分，筛下部分作（）处

患者，男性，28岁，2周来上前牙咬物不适，喝冷、热水引起疼痛。近2日来，夜间痛影响睡眠，并引起半侧头、面部痛，痛不能定位。检查时见右侧上、下前牙见多个充填体。

当日最有效的治疗措施是（）

A.局麻下开髓，封失活剂

B.局麻封闭止痛

C.口服消炎止痛药

D.针灸合谷穴、平安穴

E.以上均不是

测量上肢长度的起止点是（）

A.从肩峰至尺骨茎突尖

B.从肩峰至桡骨茎突尖

C.从肩峰至小指尖

D.从肩峰至中指尖

E.从肩峰至拇指尖

________ the arrival of the police, I would have been robbed by two masked men.

A．Had it not been for

B．If it were not for

C．Had it been not for

D．If it would not be for

It’s reported that Nest Chat allows users to block others when they want to avoid _______.

A．to be disturbed

B．to disturb

C．being disturbed

D．disturbing