2. 外语
  3. Complete the sentences below. Choose ONE WORD ONLY from the passage for each answer. Write your answers in boxes 34-36 on your a

Complete the sentences below. Choose ONE WORD ONLY from the passage for each answer. Write your answers in boxes 34-36 on your a

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问题 Complete the sentences below.
Choose ONE WORD ONLY from the passage for each answer.
Write your answers in boxes 34-36 on your answer sheet.
According to Bagnold, an______is needed to stop the sand from moving before a dune can form.
选项
答案obstacle
解析 利用细节信息“Bagnold”和“stop the sand from moving”以及顺序性原则定位于原文段落C的倒数第二句话“and an obstacle，which could be as small as a rock or as bigas a tree，that causes the sand to lose momentum and settle”，这里的“causes the sand tolose momentum and settle”对应题目的“stop the sand from moving”，所以正确答案为obstacle。
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