精白面粉中维生素的含量比蛋黄低

Bob Harris was a weatherman at a small television station. He worked for twenty years and during those twenty years, he felt that his life was boring. Every day, he studied the weather and tried to predict(预报)the next day’s weather. Then, he stood in front of the camera and read his report. Some days it was cloudy, some days it was sunny; sometimes rainy, while sometimes snowy. The weather changed each day, but Bob still felt that his job was always the same. His boss often told him to be happier and smile more in front of the camera, but Bob rarely smiled. He thought that most people did not watch his weather report and his job did not matter much to anyone. One day, he arrived at work and began to study the weather as usual. He noticed that something was different that day.

Everything he studied told him that there was going to be a very big storm very soon, though he was not completely sure. Suddenly, Bob felt excited. He ran to his boss’s office and asked to do a special weather report. The boss agreed and Bob gave a special report that afternoon, warning people of the coming storm. Because of this report, many people were safe during the storm.

Bob realized(意识到) that his job was actually very important.

小题1:Why did Bob feel that his life was boring?

A．Because the weather changed each day.

B．Because he did not want to work for a small television station.

C．Because he did not like to stand in front of the camera.

D．Because he felt that his job was always the same.小题2:Why did Bob rarely smile when he was in front of the camera?

A．Because he thought that his job did not matter much to anyone.

B．Because he only worked for a small televison station.

C．Because he did not like his boss.

D．Because the weather report was boring.小题3:Why did Bob ask to do a special weather report?

A．Because he felt excited.

B．Because he wanted to warn people of the coming storm.

C．Because he realized that his job was actually very important.

D．Because he wanted to smile in front of the camera.小题4:Why did Bob feel excited?

A．Because he wanted to do a special weather report.

B．Because he wanted to ask his boss for more money.

C．Because he knew there was going to be a big storm soon.

D．Because he was going to stand in front of the camera.小题5:How did Bob realize that his job was actually very important?

A．People were safe from the storm because of his weather report.

B．He got better pay after he did the weather report.

C．People liked him very much.

D．He did a special report every day.

某研究探讨氧疗对缓解妇科腹腔镜术后患者肩部疼痛的影响。研究方法是将腹腔镜术后第1天肩痛的患者随机分为试验组、对照组；对照组接受术后常规护理，试验组除常规护理外，8：00和16：00分别给予2h的吸氧。患者疼痛情况定时评分，比较两组患者肩痛情况的缓解程度。

此研究选择的分组对照设计类型是（）。

A.自身前后对照设计

B.单纯实验后对照设计

C.随机临床实验研究设计

D.无相等对照组设计

E.实验前后对照设计

义务教育是根据法律规定，适龄儿童和青少年都必须接受，国家、社会、家庭必须予以保证的国民教育。（ ）

热拌沥青混合料路面应待摊铺层自然降温至表面温度低于（）℃后，方可开放交通。

A.50

B.55

C.60

D.65

平衡间隙