Earthquakes have been things of worry and fear(恐懼) in history． No other natural event(事件) can 26 as much damage over so 27 an area 28 so short a time．29 in a  single earthquake there 30 be ten thousand or 31 more than a hundred thousand  32 lost． Nearly 33 this loss（損失），as well as 34 of the great damage，35，can be  prevented or avoided． If 36 are constructed（建筑） under any 37 system and 38 checked，people would not be buried or 39． With 40 and warning，41 from 42 can be reduced and damage from giant 43 can be controlled． Thus，by studying the earth’s 44 and surface，the effects of earthquakes can be 45．

26． A． cause                  B. make                C. take                    D. produce

27． A． small                   B. general             C. large                   D. important

28． A． on                      B. about               C. for                      D. in

29． A． But                     B. Though            C. Even                   D. Then

30． A． may                    B. must               C. should                 D. might

31． A． about                 B. to                   C. over                    D. even

32． A． living                  B. life                   C. live                     D. lives

33． A． all                      B. most                C. whole                 D. every

34． A． many                 B. much               C. more                  D. plenty

35． A． however              B. but                  C. then                   D. so

36． A． roads                  B. parks               C. buildings             D. bridges

37． A． old                     B. modern         C. foreign                  D. different

38． A． carefully              B. busily              C. hardly                D. daily

39． A． broken               B. cut                 C. knocked              D. killed

40． A． help                   B. care                C. fear                    D. worry

41． A． lives                   B. people             C. deaths                D. houses

42． A． wind                  B. rain                C. light                  D. fires

43． A． water                 B. waves             C. seas                   D. oceans

44． A． rocks                 B. soil                 C. air                      D. secret

45． A． changed              B. put down         C. reduced              D. turned

The tornado can____the cars,trains,even houses and put them down the next street.

   A.put up          B.put  on          C. pick up         D.pick out

______he is in Yanchang Senior High ,he doesn’t study hard.

   A.When          B.Because          C.As             D.Although

The thick dust makes _______difficult to see.

   A.it              B.them            C.this             D.that

The fires______by the earthquake did the most damage.

   A.causing         B.caused          C.cause            D.causes

We have no choice but______our earth.

   A.protect          B.to protect       C.protecting        D.protected

English is very difficult.______.we can learn it well.

   A.But             B.And           C.However         D.So

We found that many students______the classroom.

   A. have left        B.had left         C.left              D. leave

Sandstorms were over,________ a lot of areas.

   A.affecting         B.affected       C.to affect           D.affect

Weather experts advise people______out when they are caught in sandstorms.

   A.going           B.not going     C.not to go           D.to not go