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43.Jane is a wonderful singer. Her mother tells me that she …………….. professionally since she was four.
A. have been sung B.was singing C.is singing D.has been singing
44. He ……………. off alone a month ago, and ……………… of since.
A.set /hasn’t been heard B.was setting/ have moved
C.set/ hasn’t heard D.was setting/ hadn’t been heard
45.None of the students …………………. to class yet.
A.are coming B.hadn’t come C.haven’t come D.have come
46. It is thought that Google ……………… cars many transform the way we move around cities in the future.
A.driving B.driver C.motionless D.driverless
47.Rentinal implants are meant to partially restore vision to people who have lost their ………….
A.view B.scene C.scenery D.sight
48.Biotech drugs, which are ……………… from living cells provide some of the best efforts at curring diseases such as diabets, Alzheimer’s, Parkinton’s and HIV.
A. done B.made C.caused D.formed
49. The cocoons of silkworms were first used …………… silk by the Chinese.
A. to make B.for make C.to making D.to be make
50. Paper was first ………….. to make paper money playing cards or the world’s oldest book – the Diamond Sutra- in the 2nd century by the Chinese.
A. to invent B. inventing C.being invented D.invented
51. The magnetic compass was first used to determine the correct ………………… by the Chinese.
A.way B.road C.path D.direction
52. Gunpowder was first used to make beautiful displays of ………………. for the celebrations in the 9th century by the Chinese.
A. firing B.fires C.fireworks D. firework
53 . IBM Waston is an artifically intelligent computer system ........... of answering questions posted in natural language.
A.capable B. aware C. able D. fond
54. Youtube ………….. to become the world’s most popular video- sharing wedsite since 2005
A.grows B.grew C.has grown D. have grown
55. Apple Ipad ………….. the single most popular tablet Pc ever since 2010.
A.has existed B.has stayed C.has remained D. has continued
56. In less than a decade you will carry a ……….. laser pen capable of sealing wounds.
A. readable B.comfortable C.portable D. capable
57.Kia Silverbrook from Australia invented Memjet, a high- speed ……………. Technology, in 2007.
A. colour-printing B. colour-print C.colours printing D. colour printing
60. Samsung Galaxy Tab ………….. flash player as well as voice and video calls.
A.supports B.offers C.displays D.provides
61. Engineers …………….. the finished bionic contact lenses on rabbits for up to twenty minutes.
A.have yet tested B.have already tested
C.have performed D. have done
62. Eastman Kodak Company ………….. many OLED equiped products since 1987.
A. produce B.produced C.is produced D. has produced
63. Do you want a powerful Ipad or a ………….. one - the Ipad Air or the iPad Mini?
A. carrying B.portable C. porter D. travelling
64. People join and volunteer…… the belive the cause is right, and this is the highest level of motivation.
A. or B.because C.so D.but
65.The boat rudder was first invented to steer large ships which …………….. the Chinese to the build huge ships as early as 200 AD
A.made B. let C. enabled D. kept
66.The Tesla coil is used ………….. extremely powerful electrical fields.
A. to create B.to solve C. to offer D.to permit
67. As a volunteer, you participate in helping our society ... the needs of people from all walks of life
a. require b. meet c. see d. catch
63. Do you want a powerful Ipad or a ………….. one - the Ipad Air or the iPad Mini?
A. carrying B.portable C. porter D. travelling
64. People join and volunteer…… the belive the cause is right, and this is the highest level of motivation.
A. or B.because C.so D.but
65.The boat rudder was first invented to steer large ships which …………….. the Chinese to the build huge ships as early as 200 AD
A.made B. let C. enabled D. kept
66.The Tesla coil is used ………….. extremely powerful electrical fields.
A. to create B.to solve C. to offer D.to permit
67. As a volunteer, you participate in helping our society ... the needs of people from all walks of life
a. require b. meet c. see d. catch
giải thích giùm mình câu 67 vì sao mình chọn " meet" duoc ko ban