MAS集团短信目前提供的最高资费标准是（）元/月。A、50000B、40000C、3

I’m sorry I kept you ______ for a long time.

A. wait               B. waiting              C. waited

每次爆破前都必须对爆破地点附近（）内风流中瓦斯浓度进行检查，瓦斯浓度在（）以下，且煤尘符合规定后，方可爆破。

根据释义及首字母提示， 完成下列单词。

1. c______: quiet; not excited; not showing fear

2. p______: favored by many people; well liked

3. v______: opinion; idea

4. b______: the two; the one and also the other

5. o______: facing; different

下列各疾病的胸痛性质哪项错误

A．带状疱疹呈刀割样痛或灼痛

B．食管炎为烧灼痛

C．心绞痛为针刺样痛

D．纤维素性胸膜炎常呈尖锐刺痛

E．肺癌常为胸部闷痛

She is a            artist and writer. [ ]

A. well-known      

B. well-know

C. well-done        

D. well-knew