2. 外语
  3. According to the passage, when would most weight be imposed on hip-joints? According to the passage, how do engineers contribut

According to the passage, when would most weight be imposed on hip-joints? According to the passage, how do engineers contribut

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问题 According to the passage, when would most weight be imposed on hip-joints?
According to the passage, how do engineers contribute to increasing efficiency of the agricultural industry?
选项 A、By working with farmers.
B、By working in teams.
C、By growing crops of the same height.
D、By making agricultural machinery.
答案D
解析 细节推断题。依据第二段，工程师通过设计生产农业机械为增加农业效益作出贡献。
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