221.The number of women dying from breast cancer has fallen to its lowest level ____ records began in 1971.

A．when B．before C．since D．a(chǎn)fter

答案 C

222.A small car is big enough for a family of three ______ you need more space for baggage．

A．once B．because C．if D．unless

答案 D

223.Tourism, ______ it brings in money to a country, can also result in damage to the World Heritage sites there.

A. because B. as C. while D. since

答案 C

224.For more information, please send an e-mail, ______ you can also include your suggestions to us.

A. when B. where C. which D. that

答案 B

225.The fire was finally brought under control, but not ______ heavy damage had been caused.

A．before B．a(chǎn)fter C．frequent D．a(chǎn)s

答案 A

226.---Grandpa, what did the doctor say?

---He advised me to live_______ the air is fresher.

A. in where B. in which

C. the place where D. where

答案 D

227.The girl still remembers that she was too nervous ______ she gave a speech in the face of such a big crowd.

A. at the first time B. the first time

C. for the first time D. at first

答案 B

228.The violent disturbances in Bangkok had progressed to a point ________ the police had to drive away the protestants with tear gas．

A. from which B. that C. where D. what

答案 C

229.Tim's in good shape physically ______ he doesn't get much exercise．

A．even though B．a(chǎn)s long as C．now that D．in order that

答案 A

230.MacDonald who had spent much of his time ______ graduating from college back packing round Europe，decided last year to settle down．

A．when B．while C．since D．before

答案 C

231.We should be able to do the job for you quickly, ______ you give us all the necessary Information.

A. in case B. so long as C. if only D. as far as

答案 B

232.Take an active part in the activities you enjoy ______ you can make many friends．

A．where B.when C．that D．what

答案 A

233.My parents don’t care ______ my pocket money goes, but one thing I for sure: the money spent must be worthwhile.

A. why B. when C. where D. how

答案 C

234.______ he or she is not kind; their physical beauty is only a mask that hides their ugly soul.

A. Although B. Because C. If D. Since

答案 C

235.America's car industry will continue to break down ______ some progress is made to close the gap?

A．since B．because C．unless D．though

答案 C

236..Many adults agree that teenagers shouldn’t live alone ______ they have their parents’permission．

A．if B．unless C．in case D．now that

答案 B

237.The novel was completed in 1978, ______ the economic system has seen great changes

A．when B．during which

C since then D since when

答案 D

238.This is a very interesting book．I’11 buy it ______

A．how much may it cost B．it may cost

C．however much it may cost D．how may it cost

答案 C

239.I was halfway back to the hospital where the doctor was working ______ Susan caught up with me.

A．when B．while C．until D．though

答案 A

240.I have reached a point in my life ______ I need to decide which way to go．

A．where B．which C．that D．why

答案 A