41. Read the poem more slowly with a slight __________(停顿) at the end of each line.
42. Many of the graduates decided on jobs straight away, but Cliff decided to spend a year doing __________(志愿的) work.
43. Patients have benefitted greatly from this treatment, that is, this treatment is __________ to patients. (benefit)
44. The __________(改革) and open policy has brought us Chinese people a rich and prosperous life.
45. What __________(percent) of babies die of this disease every year？
46.If you __________(hesitation) too long, you will miss the opportunity.
47. It is generally __________(assume) that stress is caused by too much work.
48. She was forced to __________(退休) early from teaching because of ill health.
49. The purpose of education is not just __________(积累) knowledge.
50. We are waiting to hear the final o__________(结果) of the negotiations.