unit 1 great scientists
ⅰ.重点单词聚焦
1.we were________(击败,打败) 0-1 in the football game,which made us very upset.
答案: defeated
2.some________(专家) in the field of english teaching have been invited to give us a lecture.
答案: experts
3.environmental pollution is one of the most serious____________(挑战) we face.
答案: challenges
4.the police________(怀疑) the man in the red jacket was a criminal,but they didn’t have any evidence.
答案: suspected
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