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问题 单项选择题

上颌穿刺正确的部位是

A．下鼻道前端，距前鼻孔1.0cm处
B．下鼻道顶部，距下鼻甲前端1.5cm处
C．鼻阈之鼻腔外侧侧壁
D．下鼻道后部
E．以上都不对

答案

参考答案：B

听力题

根据短文内容和所给中文提示，写出短文空白处各单词的正确形式。每空限填一词。

US President Obama gave a TV speech to his country’s students on the day of school. He made it from a   小题1:  (教室) in a high school. He told them to study as    小题2: (努力) as they could.

“NO matter(无论) what you want to do with your life, you will need an education, ” he said.

“This isn’t just important for your own life and your own future. It will  小题3: (决定) the future of this country.”

Obama also said that school is not always   小题4: (容易). The  小题5: (挑战) of life make school a difficult time.

“Maybe you can’t get your parents’   小题6:  (帮助). Maybe someone   小题7:  (要求) you to go something wrong. But there is no excuse for not doing your homework or for not  小题8: (尝试). Your attitude(态度) toward yourselves and your education is the 小题9: (最) important.”

Students   小题10:（摇动）hands with Obama at the end of the class.
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单项选择题

在数据库系统的内部结构体系中，索引属于

A．模式
B．内模式
C．外模式
D．概念模式
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