67.What usually happens to unsuccessful animal experiments?
A. They are not revealed to the public.
B. They are made into teaching materials.
C. They are co1lected for future publication.
D. They are not removed from the research topic list.
答案:A 细节理解题。由第三段第四、五两句话“At present, scientists often share only the results of successful experiments.
If their findings do not fit the hypothesis being tested, the work never sees the light of day.”可知,科学家只公布成功的实验。
D
(2017·延边州质检)
Can dogs and cats live in perfect harmony in the same home? People who are thinking about adopting a dog as a friend for their cats are worried that they will fight. A recent research has found a new recipe of success. According to the study, if the cat is adopted before the dog, and if they are introduced when still young (less than 6 months for cats, a year for dogs), it is highly probable that the two pets will get along swimmingly. Twothirds of the homes interviewed reported a positive relationship between their cat and dog.
However, it wasn't all sweetness and light. There was a reported coldness between the cat and dog in 25% of the homes, while aggression and fighting were observed in 10% of the homes. One reason for this is probably that some of their body signals were just opposite. For example, when a cat turns its head away it signals aggression, while a dog doing the same signals submission(恭维).
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