Visitors to this country are normally admitted for six months, but foreign students can usually stay for one year. They must (51) an educational institution, and they are required to study for a minimum of fifteen hours a week on a (52) course. Prospective students have to show that they can afford their studies, and that they have sufficient (53) resources to support themselves (54) in this country.

In order to work here the foreigner needs a work permit, (55) must be applied for by his prospective employer. The problem here is that the Department of Employment has the right to grant or (56) these permits, and there is little that can be done (57) it; it would be extremely unwise for a foreign visitor to work (58) a permit, since anyone doing so is liable to immediate deportation (驱逐出境). There are some people from the Common Market countries, who are often given (59) residence permits of up to five years. Some other people, such as doctors, foreign journalists, authors and others can work without permits, and foreign students are normally allowed to (60) part-time jobs while they are studying here.

60().

A.engage 

B.take 

C.expect 

D.review

汤某，男，59岁。以"刺激性咳嗽3月余，背部疼痛两周"为主诉入院。身体评估：体温37.1℃，脉搏92次／分，血压121／76mmHg。X线胸片示右肺门可见一类圆形阴影，边缘毛糙，为明确诊断，需做痰细胞学检查。

病人需用止痛药，下列关于止痛治疗的叙述中不正确的是（）

A.尽量口服给药

B.按三阶梯疗法给药

C.在疼痛发作时给药

D.剂量根据病人需要由小到大

E.确定有效止痛的药物和剂量