仔细观察漫画《放心肉》（见图）。该图所反映的社会问题存在的原因是 [ ] ①部

Albert was an ordinary worker in an oil company in America. His workmates gave a nickname（绰号）“Four dollars a bucket of oil” below his name whenever and wherever he wrote down his name.

As time went by, people forgot his real name. Later, when Rockefeller, the board chairman(董事长)of the oil company, heard of it, he was very surprised, so he invited Albert to come to his office.

“Some people give you a nickname for ‘Four dollars a bucket’. Why aren’t you angry?” asked Rockefeller with some puzzlement in his eyes.

“Oh! Mr. Rockefeller! I like this nickname very much, because ‘Four dollars a bucket’ is our company’s advertisement. As long as someone calls me‘ Four dollars a bucket’ once, I think it’s free advertisement for our company. It’s not necessary for me to get angry. Don’t you think so , Mr. Rockefeller?”

“Oh! What a wonderful man!” Rockefeller said excitedly when hearing Albert’s words “Young man! Work harder, you must be successful in the future! I believe in you!”

Five years later, Albert became the second board chairman after Rockefeller.

Later Albert said in one of his reports, “I don’t think we should feel frustrated when we have no way to do the world-shaking things. We should treat every thing actively because maybe our future success will begin from a small thing!”

小题1:What was Albert in The oil company at the beginning?

A．A worker.

B．An assistant.

C．A manager.

D．The second board chairman.小题2: Why wasn’t Albert angry about his nickname?

A．He liked to have a nickname.

B．It could make his workmates happy.

C．He could become famous.

D．It was a free advertisement for his company.小题3:What is the main idea of this passage?

A．Rockefeller asked young people to work harder.

B．It’s very important to do small things well.

C．You can’t get angry when someone calls your nickname.

D．You should make more advertisements for your company.小题4:What would be the best title for this passage?

A．I Believe in You

B．Albert and Rockefeller

C．Four Dollars a Bucket

D．The Second Board Chairman

学生不是接受知识的"容器"，而是未来文明的（）。

A.创造者

B.传承者

C.发起者

D.实践者

男，15岁，因右下颌6急性根尖周炎进行根管治疗，在根管预备后，选择5%次氯酸钠、3%H₂O₂交替冲洗根管，选择该组冲洗液的原因如下，除了（）

A.能溶解根管壁牙本质

B.能产生新生氧

C.有充分发泡作用能使根管内碎屑朝着牙冠方向排出

D.有很强的杀菌作用

E.对坏死组织有溶解作用

胸膜斑最常累及的部位是（）

A.7～10肋后外侧肋骨下的壁层胸膜

B.肺尖胸膜

C.肋膈角处胸膜

D.7～10肋前外侧肋骨下的壁层胸膜

E.叶间裂胸膜

抽风机机壳一般用钢板制成（）型，在结构上主要考虑（）和（）。