Scientists have ______ for years that turbulence within the gaseous clouds found throughout the Milky Way stymies star formation, but some of the forces behind this disturbance remain ______ .
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Measures have been taken to ensure that no student will have to ________ of college for economic reasons.
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You have to pay about __________ for each person.
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Scientists have to _______ past experiences in making new ideas.
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Some alternative ways for scientists to do their research:a) Using ________.b) Using ________.
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we have shipped the replacement for all the items you have found______.
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1. Police have now _______________ (intensify) the search for the lost child.
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People have a constant need for being plugged in because _______.
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Some universities have a special canteen for the ____________, because they have strict tradition on food.
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According to the passage, scientists have discovered that influenza viruses_____.
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Scientists have invented a robot which can cook for people. Nowadays, science and technology______ every aspect of our lives.
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_______ for their support, he would have gone bankrupt.
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They have been _____ with the company for many years.
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________ the calculation is right， scientists can never be sure that they have included all variables and modeled them accurately.
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How any fetus survives gestation has baffled scientists for decades: the embryo's tissues are half foreign and yet, unlike______organ transplant, it isn't normally rejected.
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As some scientists have found, the vigorous exercise can make nerve cells to form. interconnected webs that make the brain run ______.
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Scientists have discovered a close_____between smoking and several serious diseases.
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Within ten years scientists will probably have___________.
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— Have you got a table for four, waiter？\n— _______
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Scientists put forward that Northern Europe would have __________ if climate continues, while Britain would have warmer weather。
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Business placesshall have equipment for __________ temperature.
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In 1968, research scientists began cooking the Arpanet for the purpose of______.
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Scientists have known how to h______ (治理，利用) the limitless power of the sun.
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Scientists have many theories about how the universe _____ into being. A cameB was comingC had comeD would come
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For all Jim ______, it might have been a burglar.
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