It is hard to predict how science is going to turn out, and if it is really good science it is impossible to predict. If the things to be found are actually new, they are by definition unknown in advance. You cannot make choices in this matter. You either have science or you don't, and if you have it you are obliged to accept the surprising and disturbing pieces of information, along with the neat and promptly useful hits,
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It is important for the teacher to show students how easy it is to understand something from authentic materials rather than how difficult it is to understand everything.()
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Climate change makes it is difficult to predict how our nose will change.
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It is important that we____learn how to drive.
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It is important to know how to make a proper introduction.
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It is so hard for her to keep _____ her tears.
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原文:It is easy to open a shop but hard to keep it open.译文:创业容易______。
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How far is it from Chicago to Miami?
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It is useful to be able to predict the extent _______which a price changes will affect supply and demand.
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It is hard to tell whether we are going to have b boom in the economy or a ______.
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We all believe that it is hard for him to take up other (responsible)_______ now.
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Why is it difficult to predict the possible effects of electromagnetic fields on an airplane's computers?
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Trader is a stressful job because it's hard to
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It is useful to be able to predict the extent to which a price change will affect supply and demand.
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It is useful to be able to predict the extent to which a price change will affect supply and demand.
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It’s hard for us to know how much ____________ they have put in China’s Space ____________.
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How far is it from here to the railway station?
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The room is so ______ with furniture—that it is hard to move about.
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—Have you finished the work?—Not yet, but no matter how hard it is, we'll keep ___ u
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Any physical theory is always provisional, in the sense that it is only a hypothesis: you can never prove it. No matter how many times the results of experiments agree with some theory, you can never be sure that the next time the result will not contradict the theory. On the other hand, you can disprove a theory by finding even a single observation that disagrees with the predictions of the theory. As philosopher of science, Karl Popper has emphasized a good theory is characterized by the fact that it makes a number of predictions that could in principle be disproved or falsified by observation. Each time new experiments are observed to agree with the predictions the theory survives, and our confidence in it is increased; but if ever a new observation is found to disagree, we have to abandon or modify the theory. At least that is what is supposed to happen, but you can always question the competence of the person who carried out the observation.
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Man’s mind is his tool Of survival.The mind is used to gain,use,store,and recall knowledge.It is his mind that enables a famer t0 know what t0 plant,when to harvest it,how to prepare food from the result.It is his mind that enables a hunter to know what he needs to make a spear,how t0 make it,and how to use it.And it is his mind that enables a blacksmith to know how t0 make iron tools.In short,it i s the mind that enables a person to know what to d0 in order tOosurvive.
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It is always raining hard.I’m afraid we have to ____the trip.
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It is hard to distinguish the twins because they _____()
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听力原文:W: How is your job at the supermarket M: Well, it’s rather hard work. The hours a听力原文:W: How is your job at the supermarket M: Well, it’s rather hard work. The hours are pretty long. I already feel difficult to keep up with my classmates. What is the man worried about ()
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– It is reported that it will rain hard next Sunday. -- _______. We’re planning to go boating that day.
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