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1.Sunlight during dawn or dusk comes in at a lower angle, and since it cannot escape the dust and pollution of the atmosphere as with daytime sunlight can，the sky turns orange and th…… 2.When two words are joined to make a new special meaning，its joining up of the meaning and the result is called a compound. 3.Geologists are concerning increasingly with the large removal of pumice in volcanic areas like Mount St. Helens, because they know it is so important to revitalize the soil. 4.Despite they sometimes hunt alone, wolves usually hunt in small packs, numbering from 3 to 4，but sometimes larger. 5.Although pecans are most plentiful in the southeastern part of the United States, they are found farther north Ohio and Illinois. 6.For there will be successful communication, there must be attentiveness and involvement in the discussion itself by all present. 7.Perhaps we should think in term of raising interest rates then reducing them, in consideration of the new reports about inflation reported last June. 8.Post-consumer anxiety is the type of psychological tension feeling a person after making a major buying decision. 9.Almost amazing about scorpions is that they can survive a whole year without food. 10.In some insects，notably crickets and cockroaches，two feelers at the hind end of the abdomen bearing sense organs. 11.The first European people to live in now that is Alaska were Russians who had journeyed over to the west coast of North America in search of gold. 12.The mere prospect of a performance of one of his operas was enough to set him to running up bills amounting to the number of ten times his prospective royalties. 13.It involves a study of the human heart which leads us through devious mazes of passion, of which it is difficult to find our way. 14.It’s believed that electrical resistance measurement of a creature determines that it’s not only the body’s ability to withstand electrical shocks，but also the percentage of body f…… 15.For the earth’s age and composition to be understood, that must be a variety of samples taken from each successive layer of its crust. 16.But that is just what Rosalind does，and she is anything of quaint. More a mixture of Plato and the film character Mary Poppins. 17. Seeking to build support among black families for its education reform law, the Bush administration paid a prominent black&n…… 18.In finance，opportunity cost analysis refers to the amount that could have been made in other investments when comparing the expected investment return. 19.After a cell is born, it looks exactly like the tiny submarine floating in that it is guided by signals from other molecules already in place. 20.Although bats avoid entangled areas, they can dart about in the room filled with criss-crossing wires without ever hitting one so that they use the navigation functions in their ea……

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