2. 外语
  3. To reach the Martian surface, NASA envisions an aerodynamic lander that flies down with thrusters to help it______.

To reach the Martian surface, NASA envisions an aerodynamic lander that flies down with thrusters to help it______.

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问题 To reach the Martian surface, NASA envisions an aerodynamic lander that flies down with thrusters to help it______.
选项 A、transcend
B、descend
C、commend
D、surpass
答案B
解析 A项意为“超出，超越”；B项意为“下降”；C项意为“赞扬，赞同，推荐”；D项意为“超过，优于”。根据句中的“reach the Martian surface”和“lander”可知此处指“降落”。因此，B项符合题意。
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