在我国，与计划经济体制相适应的事业单位管理体制的基本特征是（）。 A.政治性 B.非

在文件夹下建立一个名为NEWS的文件夹。

厌氧菌在产褥感染中占重要地位，下列描述正确的是：

A．主要有厌氧性链球菌和厌氧性类杆菌属，属于 * * 的正常菌群

B．与大肠杆菌混合感染，脓液有恶臭

C．容易引起血栓性静脉炎

D．细菌培养阳性率低

E．对甲硝达唑敏感

应注意观察顾客戴原眼镜时的镜眼距、（）等是否在正常范围。

A、鼻梁高低

B、前倾角

C、光度深浅

D、镜架款式

Many of us believe that a person’s mind becomes less active as he grows older．But this is not true，according to Dr．Lissy F．Jarvik，professor of psychiatry(精神病学)at the University of California，Los Angeles，and a board member of the New Center for Aging at the Veterans Hospital．She has studied the mental functioning of aging persons for several years.For example，one of her studies concerns 136 pairs of twins, who were first examined when they were already 60 years old．As Dr．Jarvik continued the study of the twins into their 70s and 80s，their minds did not generally decline(下降)as was expected．

However，there was some decline in their psycho-motor(精神运动的)speed． This means that it took them longer to accomplish mental tasks than it used to．But when speed was not a factor，they lost very little intellectual (智力的) ability over the years.In general，Dr．Jarvik’s studies have shown that there is no decline in knowledge or reasoning ability．This is true not only into the 30s and 40s，but into the 60s and 70s as well．

As for learning new things，and ability to remember，studies by Dr．Jarvik and others show that the old are equal to the young．It is true that older people themselves often complain that their memory is not as good as it once was．However，much of  what we call“loss of memory”is not that at a11．

In the cases where the older person’s mind really seems to decline，it is not necessarilv a sign of a decay due to becoming old or“senility”．Often it is simply a sign of a depressed emotional state．This depression usually can be got rid of by counseling(咨询)with a psychologist，or medicine which fights depression.

In American society，when an older person loses something，we tend to call him or her“senile”．But notice that when a younger person loses something，he does not blame it on senility or loss of memory．He finds some other excuse!

小题1:A long-term study of 136 pairs of twins showed that the only factor that declined over the years was  .

A．mental health

B．intellectual ability

C．the amount of knowledge

D．psycho-motor speed小题2:According to Dr．Jarvik’s studies，middle-aged and older persons should expect to     .

A．reason better

B．learn fewer new things

C．remember less

D．1ose little ability to remember小题3:The word“senility”most likely means       .

A．excellent health

B．weakness in body and mind because of old age

C．occasional forgetfulness

D．giving up one’s life小题4:Both younger and older persons should realize that          .

A．a sign of a decay due to old age or“senility’’is a common thing

B．older persons are wiser than younger ones because of different knowledge amount

C．senility or mental decay due to aging is much less common than most of us believe

D．a sign of a depressed emotional state is not a reason of decay

宋明时期我国文化出现了一个奇特现象：理学使人们的思想日益僵化，而文学艺术则争奇斗艳，充满活力。“文学艺术争奇斗艳”反映了宋明时期（）

A.君主专制统治日益强化

B.文化专制政策禁锢士人

C.西方文学艺术大量传入

D.商品经济发展，市民文化兴起