题目列表(包括答案和解析)

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50. A. focus             B. gather              C. reach                D. spread

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49. A. busy              B. likely                C. ready                D. sure

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48. A. much attention to B. more attention to    C. attention to many     D. attention to more

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47. A. the researchers   B. the experiment      C. the clock             D. the brain

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46. A. remember        B. focus on             C. forget                D. tell apart

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45. A. partly             B. quickly              C. how                  D. first

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44. A. so                B. when               C. while                 D. but

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43. A. produced         B. carried              C. tried                 D. performed

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42. A. report            B. think                C. decide               D. see

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41. A. sleepy             B. bored                    C. excited               D. active

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