题目内容
【题目】Protesters calling for a higher minimum wage gather on Tuesday in Miami, Florida, as part of __________ organizers called a “ day of action” nationwide to improve the salaries of fast food workers in the United states ______ are badly paid.
A. which; who B. what; that
C. what; how D. how; which
【答案】B
【解析】试题分析：考查定语从句。句意：呼吁涨最低工资的抗议者聚集在佛罗里达的迈阿密，组织者举行一天的全国性的罢工来提高美国快餐店工人工资。第一空what引导of是宾语从句，第二空先行词是 fast food workers，定语从句____ are badly paid缺少主语，用that/who来引导，故选B项。
考点 : 考查定语从句
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Antibiotics, insulin, organ transplantation, HIV treatments and heart-bypass surgeries—it reads like an A to Z of medical progress. But the major progress has something in common: they were all developed and tested by using animals. Actually, animals are used for research in a variety of settings. Whether or not humans should use animals for testing purposes, however, is a controversial subject.
Animal testing allows researchers to develop new medicine and treatments, advancing the field of medicine and improving the health of society. For example, many drugs used to treat or prevent cancer, HIV, diabetes, etc, have resulted from tests performed on animals. Many advocators of animal testing support the practice for this reason, even if they do not support testing, cosmetics or other non-essential substances on animals. No one chooses to use animals where there in no need. In fact, animal research has contributed to 70 percent of Nobel prizes for physiology or medicine.
Animal testing also enables scientists and researchers to test the safety of medicine and other substances with which humans have regular contact. Drugs, for example , may create significant risks to humans, so testing them on animals first gives researchers a chance to determine their safety before human trials are performed. While scientists understand the differences between humans and animals, the similarities are considered significant enough to produce relevant data that they can then apply to humans. This, animal testing reduces harm to humans and saves lives, not only because the exposure to risky substances is minimized, but because some new medicine and treatments have positive effects on humans’ overall quality of life.
However, a significant number of animals are harmed or die as a result of experiments and testing. Unfortunately, many of the substances used on animal subjects never receive approval for human use or consumption. Those who oppose animal testing consider this a very important point , because saving humans from suffering is no excuse for the death of laboratory animals. Opponents also argue that animals are dissimilar enough from humans to make the results of animals tests unreliable. Related criticism is that testing causes stress in animals, meaning that they do not react to experimental substances in the same way that they might in natural circumstances, making the results of experiments less valid
Using animals as research subjects is also expensive because they require food, shelter, care and treatment in addition to the costs of experimental substances. Long-term or multi-stage tests can increase the costs of the practice as well. The actual price paid for animals is also worth considering. In this respect, researchers take on an additional burden.
Title | Should Humans Experiment on Animals? | |
Introduction | Many __【1】___ have been made on medical research by using animal testing | |
__【2】______ about animal testing | People _【3】_____ up for it | New medicine and treatments can be developed. Advancements in the field of medicine and _【4】_________ in humans’ health can be made. Researchers can __【5】_____patients the safety of new treatments and medicine. Scientists can collect research data in ____【6】______ with humans’ medical problem. Harm done to humans will be reduced to the 【7___ and more lives will be saved. |
People opposing it | The experiments may put many animals’ lives at _【8】_______. Experiments may not ____【9】____ produce reliable results because animals do not react normally under stress. Researchers will be __【10】_______ with the extra costs of animals and their care. | |