问题 单项选择题 A1/A2型题

关于上皮异常增生的病理改变,不包括()

A.上皮基底细胞极性消失

B.有丝分裂象增加,并可出现在浅层1/2

C.出现多层基底样细胞

D.细胞黏着力下降

E.基底细胞突破基底膜进入上皮下结缔组织

答案

参考答案:E

解析:上皮异常增生可发生以下变化:①上皮基底细胞极性消失;②出现一层以上基底样细胞;③核浆比例增加;④上皮钉突呈滴状;⑤上皮层次紊乱;⑥有丝分裂增加;⑦上皮浅表1/2出现有丝分裂;⑧细胞多形性;⑨细胞核浓染;⑩核仁增大;⑩细胞黏着力下降;⑥错角化。根据以上项目出现的数目,可分为轻、中、重度上皮异常增生。重度异常增生实际上就是原位癌,其上皮层内细胞发生恶变,但基底膜尚完整,未侵犯结缔组织。如恶变上皮细胞突破基底膜,侵犯结缔组织,则为浸润性鳞状细胞癌。因此,E项是错误的。

完形填空

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A punctual person is in the habit of doing a thing at the proper time and is never late in keeping an appointment. The unpunctual man, on the other hand, never does what he has to do at the right time.    小题1: .

There’s a proverb which says, “Time flies never to be recalled.” This is true.  小题2:  .The unpunctual man is for ever wasting his most valuable possessions as well as others’. The unpunctual person is always complaining that he finds no time to answer letters, or return calls or keep appointments.    小题3: . He knows that he can get through his huge amount of work only if he faithfully keeps every appointment and deals with every piece of work when it has to be attended to.

小题4: .If a person is invited to dinner and arrives later than the appointed time, he keeps all the other guests waiting for him. Usually this will be regarded as rude both to the host and the other guests.

Unpunctuality, moreover, is very harmful when it comes to one’s duty. Imagine how it would be if those who are put in charge of important tasks failed to be at their proper place at the appointed time.   小题5:

A.They appear to be busy but never get well paid.

B.He is always in a hurry and ends up losing time.

C.Maybe nobody minds being kept waiting at a dinner party.

D.A lost thing may be found again, but lost time can never be regained.E. But the man who really has a great deal to do is very careful of his time.

F. A man who is known to be habitually unpunctual is never trusted by others.

G. Failure to be punctual in keeping one’s appointment is a sign of disrespect towards others.

选择题