下列选项中治疗作用确证阶段是（）A.Ⅰ期临床试验 B.Ⅱ期临床试验 C.Ⅲ期临床试验

Computer Course This computer course is for people who don’t know much and need to learn more about computers . You will learn what computers are , what they can and cannot do , and how to use them . ★ Course fee : $ 75 ★ Time : Every Saturday in January ( 9:00 am ---11:50 am ) ★ Equipment(设备) fee : $ 10 ★ Teacher : A famous professor of computer science
Stopping Smoking Course Do you want to stop smoking ? Have you tried to stop it but failed ? Now it’s the time to stop smoking by using the latest methods . This course will help you stop smoking . ★Course fee : $30 ★ Time : Every Sunday in March ( 4:00pm ---7: 00 pm ) ★ Teacher : Dr John Smith , who has helped hundreds of people stop smoking .
Typing Course The course is for those who want to learn to type and those who want to make their typing better . You are tested in the first class and begin practicing at one of the eight different skill levels . This allows you to learn at your own speed . Bring your own paper . ★Course fee: $125  ★Equipment fee : $25 ★Time : One hour each evening in April . ★Teachers : A number of the best business education teachers .

小题1:If Mr Black wants to take the computer course , he should pay ________in total (总共) .

A． $75

B． $85

C． $10

D．$65

小题2: If Mr Green wants to stop smoking , he may take the course __________ .

A．every Sunday morning in March	B．every evening in April
C．every Sunday afternoon in March	D．every Saturday morning in January

小题3: If you want to meet Dr John Smith , you can take _________ .

A．the typing course	B．the computer course
C．the stopping smoking course	D．all the three courses

小题4:If you want to take the typing course for a month , you should spend ________ in total .

A．12 hours

B．14 hours

C．30 hours

D．56 hours

小题5: According to the passage , which of the following is TRUE ?

A．The computer course lasts 3 hours each time .

B．If you want to take the stopping smoking course , you have to pay $10 for the equipment .

C．The typing course has eighteen skill levels in total .

D．You need to bring your own paper if you take the typing course .