2013年英语专业四级考试临近，特为大家准备以下考题，考题与考试题型完全吻合，希望能在最后的冲刺时间里给大家带来一点帮助。
41. Most environmental problems exist because adequate measures for preventing them___taken in the past.
A. was not B. were not C. were not being D. being not
42. During the summer vacation, Mary worked on a (an)____ basis as a salesman, taking 8 percent of everything she sells.
A. salary B. income C. commission D. pension
43. She listened carefully____she might discover exactly what he wanted.
A. so as that B. in case C. providing D. in order that
44. Michelle found it difficult to get his British jokes ____to Australian audiences.
A. across B. deal C. over D. down
45. The news item about the traffic accident is followed by a detailed report made ____.
A. on the spot B. on the location C. on the ground D. on the site
46. The government____ to approve the use of wide-spead surveillance when the Justice Department took objections.
A. is going B. had been C. was about D. is coming
47. It is reported that fewer and fewer of today’s workers expect to spend their working lives in the same field, ____the same company.
A. much worse B. less likely C. all else D. let alone