51. In order to look at sea life closely, people have____ some kinds of special equipment、

A. to work in B. to work over C. to work out D. to work off

52. It ____ that the jewels had been stolen by a traveler.

A. turned out B. turned up C. turned on D. turned over

53. When she does something, Mrs. Brown feels that her little child is always____

A. under way B. in the way C. on the way D. by the way

54. ____ the umbrella with you in case it rains.

A. Bring B. Get C. Carry D. Take

55. ____ in the air, fuels give off heat.

A. To burn B. Burned C. To be burned D. Being burned

56. Mary_ in the garden when it began to rain.

A. was walking B. walked C. walking D. had walked

57. It is necessary that we____ have a good ***mand of English at college.

A. must B. have to C. should D. ought to

58. If a better material ____, the strength of the part would have been increased.

A. had been used B. had been using C. being used D. using

59. When the mixture ____, it will give off a powerful force.

A. will heat B. will be heated C. is heated D. has heated

60. English____ in a new way at my college in the past few years.

A. has been teaching B. was being taught

C. has been taught D. had been taught

答案：51-55 CABDB 56-60 ACACC