【解析】 【答案】 A 【核心短语/词汇 】until直到 【翻译】 通常科学家们会测试一个理论一段时间, 才会作为真理接受它。 【解析】 考查连词,A.在 之前;B.除非;C.直到;D.尽管。 结合句意:通常科学家们会测试一个 理论一段时间,才会作为真理接受它,可知在接受 它之前要测试一段时间,before引导时间状语从 ...
A. before B. after C. when D. because 相关知识点: 试题来源: 解析 A 考查时间状语从句。句意:通常科学家们在接受一个理论之前会对这个理论检验一段时间。before表示在...之前;after表示在...之后;when表示当...时,because引导原因状语从句,表示原因。反馈...
aIn science,a theory is a reasonable explanation of observed events that are related.A theory often involves an imaginary model that helps scientists picture the way an observed event could be produced.A good example of this is found in the kinetic molecular theory,in which gases are pictured ...
Directions: An introductory sentence for a brief summary of the passage is provided below. Complete the summary by selecting the THREE answer choices that express the most important ideas in the passage. Some sentences do not belong in the summary because they express ideas that are not presented...
For example “decision affect theory” proposes that how we feel about a situation is determined partly by comparing what actually happened with what could have happened. Based on this, people should be happy when an eve...
解析 assumed assumption [解析] 考查动词时态和名词。句意:王先生说科学家们曾经认为这个理论是建立在错误的假设上的。第一个空宾语从句中缺少谓语动词,根据said得知,用一般过去时,认为assumed,第二个空位于冠词后用名词作宾语,一个错误的假设是“a wrong assumption”。故填①assumed②assumption。
B. make predictions. C. publicize new findings. D. find E. rrors in past experiments. 相关知识点: 试题来源: 解析 B细节理解题。根据第二段的“A useful theory …helps to predict events”(有用的理论可以起到预测事件作用), 可知有用的理论能够帮助科学家预测。故选B项。 反馈 收藏 ...
11.Scientists study the natural world by using"scientific method".When a scientist observes some phenomenon in nature,he develops an idea,called a theory or hypothesis (假设),about what is happening.Then he does an experiment to test his theory.If the results are as expected,then the experimen...
D. The result of the research is not fully accepted by scientists. C Teenagers around the world are familiar with the great pain of boredom.And every parent is familiar with the sounds of groaning (咕哝的)kids,sulkin...
Our theory is that these people are exploring how the game works at the beginning, rather than trying to get the very highest score they can every time. The moral is clear: invest some time in trying things out, which may mean failing occasionally, if you want to maximize learning in the...