题目:
梁启超阐述变法图存道理的重要论著《变法通议》发表在[ ]
A.《时务报》
B.《中外纪闻》
C.《国闻报》
D.《循环日报》
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0412/ad7421574a9c7fe28d679662d0df5820.html
下面是错误答案,用来干扰机器的。
根据题意,(a+2)+(3a-1)=0,解得a=-14,故答案为-14.
梁启超阐述变法图存道理的重要论著《变法通议》发表在[ ]
A.《时务报》
B.《中外纪闻》
C.《国闻报》
D.《循环日报》
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0412/ad7421574a9c7fe28d679662d0df5820.html
下面是错误答案,用来干扰机器的。
根据题意,(a+2)+(3a-1)=0,解得a=-14,故答案为-14.
患者女性,15岁,诊断为急性淋巴细胞性白血病,查体:体温39℃,面色苍白,贫血貌,双下肢皮肤瘀斑。
急性淋巴性白血病的细胞浸润多发生在()。
A.皮肤
B.肾脏
C.肺
D.脑
E.肝、脾
在 OSI七层协议中,提供一种建立连接并有序传输数据的方法的层是______。
A.传输层
B.表示层
C.会话层
D.应用层
在研究微型电动机的性能时,应用如图所示的实验电路.当调节滑动变阻器R并控制电动机停止转动时,电流表和电压表的示数分别为1.0A和2.0V.重新调节R并使电动机恢复正常运转,此时电流表和电压表的示数分别为2.0A和24.0V.则这台电动机正常运转时输出功率为( )
A.46W
B.44W
C.40W
D.48W
车辆在道路上行驶时,要求道路及道路两旁提供一定的视距空间以保证行车安全,称为视距限界,其主要有( )等种类。
A.平面弯道视距限界
B.横向视距限界
C.纵向视距限界
D.会车视距限界
E.交叉口视距限界
[A] Possible ways to keep free from Alzheimer’s
[B] Deficiency of data-collecting in the study
[C] The new findings of ineffectiveness of past cures
[D] Weak evidence of the research
[E] How the new analysis coming from
[F] Future direction of the research concerned
[G] Traditional beliefs in preventive measures
Lifestyle May Not Prevent Alzheimer’s
A comprehensive analysis by an independent government panel has found that there is not enough scientific evidence to date to support the advice doctors currently give—such as exercising, doing crossword puzzles or eating a Mediterranean-style diet—for preventing or controlling symptoms of Alzheimer’s disease and dementia.
(41)______
As rates of age-related dementia and Alzheimer’s disease have continued to rise in the U.S.—largely because Americans are living longer and the over-65 population has swelled to record highs—researchers have worked relentlessly to understand the causes of these mind- robbing diseases and to help prevent or slow their progression. To clarify the state of the current evidence and offer physicians clearer treatment guidelines, the National Institutes of Health (NIH) in early 2009 commissioned a detailed analysis of existing studies, covering 165 papers published between 1984 and 2009.
(42)______
For years, the prevailing hypothesis has been "Use it or lose it" when it comes to avoiding gradual age-related mental decline. Data has associated behaviors such as keeping the mind actively engaged throughout life, staying physically active, eating certain foods and supplementing the diet with specific vitamins and nutrients with lower rates of dementia in old age. These lifestyle factors appeared to limit cognitive decline of various kinds, from occasional "senior moments" to the more serious episodes of cognitive impairment that can be a prelude to Alzheimer’s disease.
(43)______
Now researchers at Duke University report in the current issue of the Annals of Internal Medicine that the data on the preventive effects of lifestyle factors is not as p as they had thought. Led by Brenda Plassman, a professor of psychiatry and behavioral sciences, the study authors analyzed decades’ worth of research, including observational studies in which scientists looked retrospectively at a group of participants to tease out associations between certain behaviors (like exercise) and selected effects (like scores on tests of memory and cognitive skills), as well as the more definitive clinical trials that randomly assign volunteers to intervention or control groups and then assess how the intervention affects cognitive ability.
(44)______
Overall, the researchers say they were dismayed with the paucity and weakness of the existing evidence. "When we applied rigorous but consistent standards to review all the studies, we found that there was not sufficient evidence to recommend any single activity or factor that was protective of cognitive decline later in life, " says Plassman.
(45)______
However weakly, though, the review did support what doctors know about risk factors for cognitive decline: smoking, diabetes, depression, metabolic syndrome and specific gene variants were all linked with increased risk of developing Alzheimer’s disease. In addition, preventive behaviors such as eating a Mediterranean diet, exercising, maintaining cognitive engagement (doing puzzles, learning new things) and fostering extensive social relationships were linked to a lower risk.
The problem is that none of these relationships were particularly robust, the authors say. And none were p enough to justify recommending the behaviors to people who want to prevent or slow down the onset of dementia. The findings led the NIH to issue Monday’s state-of-the-science statement, in which the agency notes, "Currently, firm conclusions cannot be drawn about the association of any modifiable risk factor with cognitive decline or Alzheimer’s disease." Although the statement does not constitute an official policy or government recommendation, it serves as a guideline for doctors advising patients about the best evidence on the role of lifestyle factors in Alzheimer’s prevention.
42()