H国总统面临空前压力。H国经济的发展需要英美等国的支援，而伦敦遭受恐怖爆炸袭击后

34. 下列属于基因表达的是______

7. 瘀血致病的特点是______

4. 徙志

17. America's first two political parties in the late 18th century were ______.

9. 结核性胸膜炎的特点有______

11. 下列属于真核生物基因组结构中的中度重复序列______

2. 计划工作是______。

7. 顾客为购买某一产品所耗费的时间、精力、体力以及所支付的货币资金等是指______。

甲公司采用出包方式建造固定资产。2016年8月31日，某工程达到预定可使用状态

1. cDNA文库在理论上______

4. 下列关于法律体系、法学体系和法系的表述，正确的是______。

8. 下列选项中，为我国近代最早的官办西医学堂的是______

如图所示，圆柱体的底面半径为2，高为4，垂直于底面的平面截圆柱体所得的截面为ABCD，若弦

习近平主席在博鳌亚洲论坛2018年年会开幕式主旨演讲中指出，“1978年，在邓小平先生倡导下

据调查，滨州市有24%的家庭拥有电脑，但拥有电脑的家庭中的12%每周编写程序2小时以上

7. Humor can also be a powerful ______ against stress and misfortune.

13. 《孟子·万章下》：“天子之卿受地视侯。”

12. vehement

. Educators are seriously concerned about the high rate of dropouts among the doctor of philosophy candidates and the consequent loss of talent to a nation in need of Ph.D.s. Some have replaced the drop-outs' loss as high as 50 percent. The extent of the loss was, however, largely a matter of expert guessing. Last week a well-rounded study was published. It was based on 22000 questionnaires sent to former graduate students who were enrolled in 24 universities and it seemed to show many past fears to be groundless. The dropouts rate was found to be 31 percent, and in most cases the dropouts, while not completing the Ph.D. requirement, went on to productive work. They are not only doing well financially, but, according to the report, are not far below the income levels of those who went on to complete their doctorates. Discussing the study last week, Dr. Tucker said the project was initiated because of the concern frequently expressed by graduate faculties and administrators that some of the individuals who dropped out of Ph.D. programs were capable of completing the requirement for the degree. Attrition at the Ph.D. level is also thought to be a waste of precious faculty time and a drain on university resources already being used to capacity. Some people expressed the opinion that the shortage of highly trained specialists and college teachers could be reduced by persuading the dropouts to return to graduate schools to complete the Ph.D.. "The results of our research," Dr. Tucker concluded, "did not support these opinions." 1. Lack of motivation was the principal reason for dropping out. 2. Most dropouts went as far in their doctoral program as was consistent with their levels of ability or their specialties. 3. Most dropouts are now engaged in work consistent with their education and motivation. Nearly 75 percent of the dropouts said there was no academic reason for their decision, but those who mentioned academic reason cited failure to pass the qualifying examination, uncompleted research and failure to pass language exams. Among the single most important personal reasons identified by dropouts for non-completion of their Ph.D.'s program, lack of finances was marked by 19 percent. As an indication of how well the dropouts were doing, a chart showed 2% in humanities were receiving $20000 and more annually while none of the Ph.D.'s with that background reached this figure. The Ph.D.'s income in the $7500 to $15000 bracket with 78% at that level against 50% for the dropouts. This may also be an indication of the fact that top salaries in the academic fields, where Ph.D.s tend to rise to the highest salaries, are still lagging behind other fields. As to the possibility of getting dropouts back on campus, the outlook was glum. The main condition which would have to prevail for at least 25% of the dropouts who might consider returning to graduate school would be to guarantee that they would retain their present level of income and in some cases their present job.1. The author states that many educators feel that ______.