311.5分保存40.YoushouldreadaboutPompeiibeforeyougothere.1.Obligation2.Advice321分保存IV.Choosethebestanswerforeachofthefollowingsentences.(15%,1pointeach)41.I________withthedolphinsinFloridalastyear.A.swimB.s

　　311.5分保存

　　40.YoushouldreadaboutPompeiibeforeyougothere.

　　1.Obligation2.Advice

　　321分保存

　　IV.Choosethebestanswerforeachofthefollowingsentences.(15%,1pointeach)

　　41.I________withthedolphinsinFloridalastyear.

　　A.swim

　　B.swam

　　C.swum

　　331分保存

　　42.Attheendoftheholiday,we________toVancouver,Canada.

　　A.fly

　　B.flied

　　C.flew

　　341分保存

　　41

　　43.I________atthesealswhentheyserveddinner.

　　A.looked

　　B.waslooking

　　C.werelooking

　　351分保存

　　44.Onedaywhilehewasclimbingamountain,he________tothinkabouthislifeandfuture.

　　A.began

　　B.wasbeginning

　　C.begins

　　361分保存

　　45.Thecamel________betheprimarywayfordesertpeopletomovefromplacetoplace.

　　A.usesto

　　B.used

　　C.usedto

　　371分保存

　　46.Heatesandwiches________hemadehimself.

　　A.if

　　B.that

　　C.sothat

　　381分保存

　　47.Hesaidthattheparkwasbeautiful________thetrainridewastoolong.

　　A.but

　　B.unless

　　C.because

　　391分保存

　　448.Theweatherdamagesthebuildings,________ittakesalongtimeforthistohappen.

　　A.evenif

　　B.although

　　C.which

　　401分保存

　　49.Thestoryisaboutasnake________pridealmostruinedhim.

　　A.who

　　B.whom

　　C.whose