允许速度200km/h≥Vmax＞120km/h线路，轨距变化率不得大于2‰（不含规

Jenny gets up early in the morning. She has her breakfast and then goes to school. She walks to the bus stop and takes a bus. She gets to school at about half past seven. Jenny is never late for school. She likes her school and works hard. Classes begin at 8:00. She has six classes every day. Jenny is good at all her lessons, and she likes English best. Usually Jenny has lunch at school. She goes home at five in the afternoon. Sometimes, she helps her friends with their lessons. After supper she usually watches TV news. Then she does her homework. She goes to bed at about 9:30. Jenny is a good girl.

小题1:Where does Jenny have her breakfast?

A．She has her breakfast at home.

B．She has her breakfast at school.

C．She has her breakfast on her way to school.

D．She has her breakfast on the bus.小题2:How many hours is Jenny at school?

A．She is at school for seven hours.

B．She is at school for seven and a half hours.

C．She is at school for eight hours.

D．She is at school for nine and a half hours.小题3:What does Jenny sometimes do after school?

A．She has supper with her classmates at school

B．She helps her friends with their lessons.

C．She does some shopping for her mother.

D．She goes home with her friends.

迷路瘘管是指

A．局限性迷路炎

B．浆液性迷路炎

C．化脓性迷路炎

D．坏死性迷路炎

E．隐匿性迷路炎

WHO推荐静息时，左、右心室射血分数的正常值是（）

A.LVEF>50%，RVEF>40%

B.LVEF>45%，RVEF>40%

C.LVEF>55%，RVEF>50%

D.LVEF>60%，RVEF>55%

E.LVEF>50%，RVEF>45%

关于肾CT检查说法，错误的是（）

A.扫描前3天禁服钡剂、钙或含金属药物

B.平扫可发现钙化和结石

C.扫描前30分钟口服15%泛影葡胺400ml

D.一般不需做增强扫描

E.扫描前6小时禁食

简述《一句话》这首诗的结构及音节用韵特点。