A simple idea supports science: "trust, but verify". Results should always be【C1】______to challenge from experiment. That simple but powerful idea has【C2】______a vast body of knowledge.【C3】______its birth in the 17th century, modern science has changed the world【C4】______recognition, and overwhelmingly for the better. But success can【C5】______self-contentment. Modern scientists are doing too much trusting and not enough verifying, which does harm to both the whole of science and humanity. Too many of the【C6】______that fill the academic field are the result of inferior experiments or poor analysis. A rule of thumb among biotechnology venture-capitalists is that half of【C7】______research cannot be reproduced. Even that may be【C8】______. Last year researchers at one biotech firm, Amgen, found they could reproduce just six of 53 "landmark" studies in cancer research. Earlier, a group at Bayer, a drug company,【C9】______to repeat just a quarter of 67 similarly important papers. A leading computer scientist complains that three-quarters of papers in his subfield are nonsense. The reasons might lie in this: researchers are no longer willing to verify hypothesis investigated by other scholars since these papers have rare chance to be published. All this makes a poor foundation for an enterprise dedicated【C10】______discovering the truth about the world What might be done to shore it up? One【C11】______should be for all disciplines to follow the example of those that have done most to tighten standards. 【C12】______research protocols should be registered in advance and monitored in virtual notebooks. This would【C13】______the temptation to distort the experiment's design so as to make the results look more【C14】______than they are.【C15】______possible, trial data also should be open for other researchers to【C16】______and test. Science still【C17】______enormous respect. But its privileged【C18】______is founded on the capacity to be right most of the time and to correct its mistakes when it gets things wrong. And it is not as if the universe is short of【C19】______mysteries to keep generations of scientists hard【C20】______The false trails laid down by inferior research are an unforgivable barrier to understanding.
【答案解析】解析：从空格后的定语to distort the experiment's design(扭曲实验设计)可知，这是不好的方面。上文提到要tighten standards(严格标准)，因此扭曲实验设计应该是不被允许的行为。故选A项curb“抑制”。
单选题
【C14】
【正确答案】
C
【答案解析】解析：空格处所需词语为系动词look的表语，用于描述目的状语中results的性质。从前面所述，实际的实验结果不能让人满意以至于有人想要distort the experiment's design来得到好的实验结果。故填入的形容词应具有积极的意义。C项substantial“很有分量的，有价值的”为正确答案。
单选题
【C15】
【正确答案】
D
【答案解析】解析：由句中的also should be可知，此处继续讨论完善科学研究的方法，故D项Where为答案。where possible意为“如果可能”，表假设语气，是固定搭配。