如图表示一中间隔以半透膜(只允许水分子通过)的水槽,两侧分别加入等质量浓度的葡萄糖溶

题型:单项选择题

问题:

如图表示一中间隔以半透膜(只允许水分子通过)的水槽,两侧分别加入等质量浓度的葡萄糖溶液和麦芽糖溶液。然后在半透膜两侧加入等质量的麦芽糖酶,在加入麦芽糖酶前后A、B两侧液面的变化是()

A.加酶前A侧上升,加酶后B侧上升并等于A侧高度

B.加酶前A侧上升,加酶后B侧上升并高于A侧高度

C.加酶前后A、B两侧液面不变

D.加酶前A、B两侧液面不变,加酶后B侧上升并高于A侧高度

考点:高中生物水分吸收与利用水分吸收与利用题库
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尼曼-匹克病的脂质堆积在什么细胞中()

A.粒细胞

B.淋巴细胞

C.单核-巨噬细胞系统

D.浆细胞

E.嗜酸细胞

题型:单项选择题

.

A.

B.

C.

D.

题型:单项选择题

Professor Reason recently persuaded 35 people to keep a diary of all their absentminded actions for two weeks. When he came to analyse their embarrassing errors, he was surprised to find that nearly all of them fell into a few groups.

One of the women, for instance, on leaving her house for work one morning threw her pet dog her earrings and tried to fix a dog biscuit on her ear. “The explanation for this is that the brain is like a computer,”explains the professor.“People programme themselves to do certain activities regularly. It was the woman's custom every morning to throw her dog two biscuits and then put on her ear rings. But somehow the action got reversed(颠倒) in the programme.” About one in twenty of the incidents the volunteers reported were these “programme assembly failures”.

Twenty percent of all errors were “test failures”— primarily due to not verifying the progress of what the body was doing. A man about to get his car out

of the garage passed through the back yard where his garden jacket and boots were kept, put them on—much to his surprise. A woman victim reported:“I got into the bath with my socks on.”

The commonest problem was information “storage failures”. People forgot the

names of people whose faces they knew,went into a room and forgot why they were

there, mislaid something, or smoked a cigarette without realizing it.

The research so far suggests that while the “central processor” of the brain is liberated from secondtosecond control of a wellpractised routine, it must repeatedly switch back its attention at important decision points to check that the action goes on as intended. Otherwise the activity may be “captured” by another frequently and recently used programme, resulting in embarrassing errors.

1.The purpose of Professor Reason's research is  _______.

A.to show the difference between men and women in their reasoning

B.to classify and explain some errors in human actions

C.to find the causes which lead to computer failures

D.to compare computer functions with brain workings

2.Which of the following might be grouped under “programme assembly failures”?

A.A woman went into a shop and forgot what to buy.

B.A man returning home after work left his key in the lock.

C.A lady fell as she was concentrating on each step her feet were taking.

D.An old man, with his shoes on, was trying to put on his socks.

3.The word “verifying” in paragraph 3 can be replaced by _______ .

A.improvingB.changingC.checkingD.stopping

4.According to the passage, the information “storage failures” refer to _______ .

A.the destruction of information collecting system

B.the elimination of one's total memory

C.the temporary loss of part of one's memory

D.the separation of one's action from consciousness

题型:单项选择题

病人,男性,职业汽车驾驶员,3D前受凉后出现感冒症状,以往无药物过敏史,应慎用下列哪种药:().

A.阿司匹林;

B.苯海拉明;

C.对乙酰氨基酚;

D.右美沙芬;

E.金刚烷胺.

题型:单项选择题

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