正确答案: ABCD

利润率是剩余价值率的转化形式，是同一剩余价值量与不同资本的比率 利润率总是小于剩余价值率 两者反映的关系不同 两者按同一方向变化

题目：利润率和剩余价值率的关系主要有

解析：[答案] ABCD

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举一反三的答案和解析：

[单选题]A lodging B shelter C dwelling D house

lodging B.shelter

[单选题]下列哪项骨折是稳定骨折?

桡骨远端青枝骨折

[单选题]Text 2 To paraphrase 18th-century statesman Edmund Burke,“all that is needed for the triumph of a misguided cause is that good people do nothing.”One such cause now seeks to end biomedical research because of the theory that animals have rights ruling out their use in research. Scientists need to respond forcefully to animal rights advocates, whose arguments are confusing the public and thereby threatening advances in health knowledge and care. Leaders of the animal rights movement target biomedical research because it depends on public funding, and few people understand the process of health care research. Hearing allegations of cruelty to animals in research settings, many are perplexed that anyone would deliberately harm an animal. For example, a grandmotherly woman staffing an animal rights booth at a recent street fair was distributing a brochure that encouraged readers not to use anything that opposed immunizations, she wanted to know if vaccines come from animal research. When assured that they do, she replied,“Then I would have to say yes.”Asked what will happen when epidemics return, she said,“Don’t worry, scientists will find some way of using computers.”Such well-meaning people just don's understand. Scientists must communicate their message to the public in a compassionate, understandable way-in human terms, not in the language of molecular biology. We need to make clear the connection between animal research and a grandmother's hip replacement, a father's bypass operation a baby's vaccinations, and even a pet's shots. To those who are unaware that animal research was needed to produce these treatments, as well as new treatments and vaccines, animal research seems wasteful at best and cruel at worst.Much can be done. Scientists could“adopt”middle school classes and present their own research. They should be quick to respond to letters to the editor, lest animal rights misinformation go unchallenged and acquire a deceptive appearance of truth. Research institutions could be opened to tours, to show that laboratory animals receive humane care. Finally, because the ultimate stakeholders are patients, the health research community should actively recruit to its cause not only well-known personalities such as Stephen Cooper, who has made courageous statements about the value of animal research, but all who receive medical treatment. If good people do nothing there is a real possibility that an uninformed citizenry will extinguish the precious embers of medical progress.第46题：The author begins his article with Edmund Burke\'s words to

call on scientists to take some actions.

[单选题]Ⅱ型呼吸衰竭，有严重的二氧化碳潴留，以下哪项变化是不正确的?

脑血流量降低

[单选题]

Because

[单选题]如果灵活偏好曲线接近水平线，这意味着（ ）。

利率变动很大时，货币需求也不会有很大变动