男性，20岁家中安装了煤气热水器，2小时前在洗澡时昏倒在浴室内，送至医院时病人处于昏
题型：单项选择题 A3/A4型题
问题：
男性，20岁家中安装了煤气热水器，2小时前在洗澡时昏倒在浴室内，送至医院时病人处于昏迷状态，小便失禁，瞳孔缩小，对光反射消失，角膜反射迟钝，呼吸浅快，32次/分，心率102次/分，口唇樱红，拟诊"急性一氧化碳中毒"。此时给病人抽血急查碳氧血红蛋白浓度很可能在（）
A.5%以下
B.10%～20%
C.30%～40%
D.50%以上
E.无法查到
题型：单项选择题 A3/A4型题
On the evening of June 21, 1992, a tall man with brown hair and blue eyes entered the beautiful hall of the Bell Tower Hotel in Xi’an with his bicycle. The hotel workers received him and telephoned the manager, for they had never seen a bicycle in the hotel ball before, though they lived in “the kingdom of bicycles.”
小题1:The hotel workers told the manager about Friedlander coming to the hotel because .
A．he asked to see the manager
B．he entered the hall with a bike
C．the manager had to know about all foreign guests
D．the manager knew about his trip and was expecting him小题2:Friedlander is visiting the three countries in the following order, .
A．China, India, and Pakistan
B．India, China, and Pakistan
C．Pakistan, China, and India
D．China, Pakistan, and India小题3:What made Friedlander want to come to China?
A．The stories about Marco Polo.
B．The famous sights in Xi’an .
C．His interest 
in Chinese silk.
D．His childhood dreams about bicycles .、小题4:Friedlander can be said to be .
A．clever
B．friendly
C．hardworking
D．strong—minded
万元，试计算最大利润的总税金及生产80件时的总税金．