问题 单项选择题

关于结核分支杆菌生物学特性的叙述错误的是()。

A.专性需氧

B.抗酸染色阳性

C.培养的菌落呈颗粒结节状

D.耐盐性强

E.耐干燥

答案

参考答案:D

解析:

结核分支杆菌为专性需氧,3%~5%CO2能促进生长。营养要求较高,必须在含血清、卵黄、马铃薯、甘油及含某些无机盐类的特殊培养基L才能生长良好。典型菌落为粗糙型,表面干燥呈颗粒状,液体培养时形成菌膜。结核分支杆菌因胞壁含大量脂类故对理化因素抵抗力较强。耐干燥,在干燥的痰内可存活6~8个月。耐酸,在3%的HCl或6%H2SO4中不被杀死。

判断题
单项选择题

There are two types of people in the world. Although they have equal degree of health and wealth and other comforts of life, one becomes happy and the other becomes unhappy. This arises from the different ways in which they consider things, persons, events and the resulting effects upon their minds.
People who are to be happy fix their attention on the convenience of things: the pleasant parts of conversation, the well prepared dishes, the goodness of the wine and the fine weather. They enjoy all the cheerful things. Those who are to be unhappy think and speak only of the opposite things. Therefore, they are continually dissatisfied. By their remarks, they sour the pleasure of society, offend (hurt) many people, and make themselves disagreeable everywhere. If this turn of mind was founded in nature, such unhappy persons would be the more to be pitied. The intention of criticizing and being disliked is perhaps taken up by imitation. It grows into a habit, unknown to its possessors. The habit may be p, but it may be cured when those who have it realize its bad effects on their interests and tastes. I hope this little warning may be of service to them, and help them change this habit.
Although in fact it is chiefly an act of the imagination, it has serious results in life since it brings on deep sorrow and bad luck. Those people offend many others; nobody loves them, and no one treats them with more than the most common politeness and respect. This frequently puts them in bad temper and draws them into arguments. If they aim at getting some advantages in social position or fortune, nobody wishes them success. Nor will anyone start a step or speak a word to favor their hopes. If they bring on themselves public objections, no one will defend or excuse them, and many will join to criticize their wrongdoings. These should change this bad habit and be pleased with what is pleasing, without worrying needlessly about themselves and others. If they do not, it will be good for others to avoid any contact with them. Otherwise, it can be disagreeable and sometimes very inconvenient, especially when one becomes mixed up in their quarrels.

People who are unhappy ______.

A. always consider things differently from others
B. usually are affected by the results of certain things
C. usually misunderstand what others think or say
D. always discover the unpleasant side of certain things