缘龈炎的临床表现A．疼痛明显 B．自发出血 C．牙周袋形成 D．牙排列拥挤 E．牙颈

阅读理解.

      Two old men, Bob and Alf, were waiting in line outside the stadium (体育场).They were waiting to get into watching a football game. 

      They were both poor and could not buy tickets for seats in the best part of thestadium. They were

standing in line to get into the cheapest section (部分).

      They both liked football. Every week they watched the game.

      Today when they got to the gate of the stadium, a man was checking the tickets.Bob showed his ticket and went in.

      Alf started looking for his ticket, first in his trousers pockets, then in his jacketpockets and his shirt

pockets.

      The man became angry.

      "What's that in your mouth?" he asked.

      "Oh, it's my ticket. I knew I had it somewhere. " 

      He took the ticket out of his mouth and showed it to the man at the gate.

      "OK...OK..." the man at the gate said. "You can go in. "

      When Alf went inside the stadium, Bob said, "That's not the place to keep yourticket. "

      "Yes, but when I took the old ticket out of my mouth, the date came off (脱落) too!"

根据短文内容,判断下列句子的正(T)误(F)。

( )1. Alf was poor and Bob was rich.

( )2. Both of them liked football games.

( )3. Alf really didn't know where he put his ticket.

( )4. Bob bought a ticket.

( )5. Alf didn't buy the ticket, he had an old one.

对中方投资额（）万美元以上至3亿美元以下的资源开发类项目，省级发展改革部门在下发核准文件前，需报国家发展改革委登记。

A.800

B.1000

C.2000

D.3000

卫生法所调整的法律关系是（）。

A.卫生技术人员在医疗中发生的关系

B.所有医药卫生人员在技术服务中的关系

C.医疗机构的服务关系

D.在卫生活动过程中所发生的社会关系

E.国家行政机关管理活动中的关系

清理过滤器时，要均匀用力，把盲板盖向上抬起，放在（）的地方。

A.任意

B.干净

C.凸凹

D.选定

锅炉省煤器破损后，烟气阻力会增加，引风机的声音不正常，电流（）。

A.减小

B.不变

C.增大

D.波动