问题 
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              What is the passage mainly concerned with?A.America"s best colleges.B.The power of the wor 
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              The passage is mainly concerned with______.A.the components of sunspotsB.sunspots acting l 
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              The passage is mainly concerned with______.A.the second interviewB.the first interviewC.an 
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              The passage is mainly concerned with______.A.stressB.physical exercisesC.dietsD.anxiety 
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              What is this passage mainly concerned with?A.The problems in U.S. hospitals and medical ce 
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              What is this passage mainly concerned with?A.The functions of the Department of Labor in A 
 
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冀公网安备 13070302000102号