Question

 John Snow was born and worked as a __36__ in Great Britain．Exactly, he was an anaesthetist，37 means that he put people to sleep during operation．He also began to experiment using the same drugs to help women when they had   38 ．That is why he became the doctor who  39 Queen victoria to give the birth of her babies．

At the time he lived，cholera was the most  40 disease．Neither its cause，nor its  41 was understood．So many thousands of people died  42 there was an outbreak．John Snow was  43 to help ordinary people   44  from cholera．He  45  the disease began in the stomach and the patients died quickly after severe vomiting(呕吐)and diarrhea (腹泄)．46 ，he believed cholera resulted from water．When another  47 hit London in 1854，John Snow set to work．

John Snow approached the problem in a systematic way．He marked on a map  48 all the dead people had lived and found many of the   49  were near a water pump．It seemed the water was the 50 ．So he collected information about the  51 habits of the dead people and used them eventually to prove his theory．With the information  52  ，John Snow was sure  that   53  water was the cause．

Then people were required to 54  the water company to supply them with clean water．Thanks __55___ John Snow there was no more outbreaks of cholera．

1.	A．scientist B．an official C．an officer D．doctor

2.A．who           B．that          C which        D．it

3.	A．pain B．ache C．difficulties D．babies

4.	A．assisted with B．took care C．look after D．joined

5.	A．surprising B．interesting C．interested D．frightening

6.	A．cure B．method C．result D．threat

7.	A．each time B．at one time C．in no time D．the first time

8.	A．delighted B．devoted C．absorbed D．determined

9.	A．suffered B．having suffered C．suffering D．being suffered

10.	A．noticed B．was noticing C．has noticed D．had noticed

11.	A．Therefore B．As a result of C．So D．According to

12.	A．disease B．disaster C．outbreak D．case

13.	A．how B．where C．what D．in which

14.	A．women B．men C．death D．injuries

15.	A．result B．cause C．origin D．case

16.	A．drinking B．1iving C．working D．housing

17.	A．having collected B．being collected C．collected D．collecting

18.	A．being polluted B．polluted C．polluting D．having polluted

19.	A．take on B．call on C．depend on D．carry on

20.	A．to B．/ C．for D．on

Answer

1.D

2.C

3.D

4.C

5.D

6.A

7.A

8.D

9.C

10.A

11.A

12.C

13.B

14.C

15.B

16.A

17.C

18.B

19.C

20.A

【解析】略