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问题 选择题

正常情况下，下列关于脉搏的说法正确的是（　　）

A．动脉和静脉都有脉搏

B．女生的脉搏大于男生

C．体质强的脉搏大于体质弱的脉搏

D．脉搏越少越好

答案

A、动脉和静脉都有脉搏．波形静脉脉搏的形成与动脉脉搏不同，它不是由于心室舒缩和动脉管的弹性，而是由心动周期中心房内压的改变和大型静脉邻近的动脉搏动的影响形成的．其中心房内压的改变是静脉脉搏形成的主要因素．

B、脉搏对于女生、男生没有必然的关系．它与心脏的强壮度等有关．

C、运动和情绪激动时可使脉搏增快，而休息，睡眠则使脉搏减慢．体质并不是唯一决定性因素．

D、脉搏过多过少都不好．一般成人脉率每分钟超过100次，称为心动过速；每分钟低于60次，称为心动过缓．

故选：A

阅读理解

  Frank is my good friend. We are in the same class. He is fourteen, one year older than me. His parents are both teachers in No 7 Middle School. Frank studies hard. His English and math are very good. He often helps other students with their English and math. Our teachers like him very much.

We go to school together by bike in the morning. We have lunch at school. After school in the afternoon, we often play sports. We play soccer and baseball. In the evening, he does his homework at home. Sometimes he watches soccer games on TV. On Sundays, he goes out with his parents in his father’s car. They play in the park and do sports there. Sometimes my father takes me there, too. We play sports together. We have a good time.

小题1:Who is Frank? He is a _________.

A．teacher

B．soccer player

C．student

D．driver小题2:I’m ________ years old this year.

A．fourteen

B．thirteen

C．fifteen

D．sixteen小题3:Frank is good at __________.

A．math and Chinese

B．English and Chinese

C．math and English

D．music and Chinese小题4:Frank __________ at school.

A．has breakfast

B．has supper

C．has lunch

D．watches TV小题5:When does Frank do his homework?

A．In the evening

B．In the morning

C．In the afternoon

D．At noon.
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