属于两性生物碱的化合物是A．可待因 B．秋水仙碱 C．吗啡 D．莨菪碱 E．小檗碱

（8分）如图所示，A、B两棒长均为L＝1m，A的下端和B的上端相距s=20m。若A、B同时运动，A做自由落体运动，B做竖直上抛运动，初速度v₀=40m/s。求：（g=10m/s²）

（1）A、B两棒何时相遇。

（2）A、B两棒从相遇到分离所需的时间。

Long ago, in days of the Roman Empire, people used to believe a god of farmings called “Saturn”. They believed that Saturn could make the weather good or bad, and that he had the power to control how much rain would fall.

Before a Roman farmer would plant his fields, he would try to get Saturn to give him good weather. He believed that if he killed an animal for Saturn, that would make Saturn happy. Then Saturn would make sure that the weather was good.

Not only did the people name a planet after Saturn but they also name a day of the week after him. They called this day “Saturni dies”, Latin words which mean “day of Saturn”. In English those words became Saturday.

6. What was Saturn believed to be in charge of?

A. Rainfall.    B. The power of nature.   C. Farming.    D. Days in a week.

7. Why did a Roman farmer kill an animal before planting his fields?

Because      .

A. killing an animal would bring him good luck

B. Saturn enjoyed eating animals

C. Saturn was happy to see animals being killed

D. he wanted to please Saturn so that Saturn would make the weather good for his planting

8. Which of the following is NOT TRUE?

A. Saturn is also the name of planet.

B. The Roman people used to believe Saturn to be their god.

C. Saturn was named for the last day of the week.

D. Saturn had three meanings.

9. What’s the aim of the author in writing this passage?

A. How the Romans worshipped (崇拜) Saturn.

B. Why the Romans believed in Saturn.

C. The different meanings of the word Saturn.

D. How Saturday got its name.

女性，54岁。久站或咳嗽时左腹股沟区胀痛1年，有慢性支气管炎病史3年，近1个月咳嗽加重。查体：站立时左腹股沟韧带下方内侧突起半球形肿物，平卧时缩小，咳嗽时无明显冲击感。

应诊断为（）

A.左侧腹股沟斜疝

B.左腹股沟脂肪瘤

C.左腹股沟肿大淋巴结

D.大隐静脉曲张结节膨大

E.左侧股疝

斜方肌起自枕骨上项线、枕外隆凸、项韧带、第7颈椎和全部胸椎的棘突。

外伤清洗伤口可用：

A、碘酒

B、酒精

C、紫药水

D、生理盐水