有一患者长时间步行引起第二跖骨骨折，问病因是何种外力A．直接暴力 B．间接暴力 C．

男性，26岁，常于劳动时出现呼吸困难，有晕厥史，其孪生兄弟于半年前猝死。查体：胸骨左缘第3～4肋间可闻及3/6级粗糙响亮的收缩期杂音，患者从卧位迅速站立后杂音增强。

关于该患者心脏杂音强度的变化，下列哪项正确

A．含硝酸甘油后增强

B．用西地兰后减弱

C．用异搏定后增强

D．用心得安后增强

任务型阅读

A: Hello, Tom. What's that?

B: It's a photo of my family.

A: Is this your father?

B: Yes, he is my father. He is a doctor(医生). Look! This is my mother.

A: Is she a doctor too?

B: No, she is a teacher. Her students(学生) call her Ms Green.

A: Is the girlyour sister?

B: No, she is Alice. She is my uncle's daughter.

A: Is this boy your brother?

B: No, ha..ha, it's me.I look very young.

根据对话内容,完成下列句子.

1. This is a __________ of Tom's family.

2. Tom's __________ is a teacher.

3. Alice is Tom's __________.

4. Ms Green is Tom's __________.

5. __________ people are in the photo.

以下属于罗马帝国时期的伦理学代表人物的是（）

A.边沁

B.阿奎那

C.斯宾诺莎

D.马基雅维利

试述国际上广泛使用的三种租船方式。