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• 12. We cannot give you a _____ answer now; there are still many uncertainties about the issue.(A) va
• 20. Las Vegas, _____ of the United States, entices people to come and throw away their money.(A) is
• 26. The magnetic compass does not operate satisfactorily near the magnetic poles, nor _____ near the
• 14. David fell off the bus and sprained his ankle. He rose to his feet with effort and slowly _____
• 28. _____ as much as one-fourth of all timber harvested is not used.(A) The estimate (B) The estimat
• 16. Recent studies have indicated that _____ found in tomatoes can help prevent cancer.(A) foundatio
• 29. Good friends are mirrors that reflect the truest images of ourselves. They shed a light that ___
• 19. The price of oil, as we know, has _____ doubled in the past three years.(A) larger than (B) more
• 18. Since the road is wet this morning, _____ last night.(A) it must rain (B) it must be raining (C)
• 23. The space shuttle was _____ into outer space with the help of its booster rockets.(A) hurled (B)
• 22. The police decided to _____ the new law by increasing the number of road patrols.(A) beckon (B)
• 21. Besides his cheerful _____, he was also a very intelligent and industrious boy.(A) environment (
• 25. Lead _____ as a material for sculpture since the time of the early Greeks.(A) has been used (B)
• 30. When problems are coming into focus, it's easy to let a sense of helplessness set in. _____
• 24. If you are prone to occasional headache pain, resting in a darkened room may _____ the pain.(A)
• 27. _____ all the behavior is learned behavior is a basic assumption of social scientists.(A) Nearly
• 32. Internet fraud is differentiated from theft since the victim voluntarily and knowingly provides
• 33. One of Copenhagen Zoo’s giant pandas escaped from its enclosure early Monday and roamed the park
• 35. Tensions are _____ between China and India in the Himalayas and along the 38th parallel because
• 34. In a corner of India where curry remains an alien dish, stews made with wild edible plants and h
• 36. Foxes in cities are evolving to have smaller faces and skulls— similar to the way dogs and cats
• 37. _____ could prevent covid-19 second waves as a study says.(A) Widespread mask-wearing (B)Widespr
• 38. Mumbai, _____, has emerged as the country’s coronavirus hot spot, with more than 40,000 cases an
• 31. The beach was covered with hollows and _____ after the tide had gone out.(A) ridges (B) smudges
• 7.下列哪些地形是河川的堆積作用所形成的？（甲）峽谷（乙）沖積扇（丙）瀑布（丁）三角洲(A)甲乙 (B)乙丙 (C)甲丙 (D)乙丁。