2. 外语
  3. Earthquakes cause vibrations to pass______ around the ground in the form of waves.

Earthquakes cause vibrations to pass______ around the ground in the form of waves.

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问题 Earthquakes cause vibrations to pass______ around the ground in the form of waves.
选项 A、throughout
B、through the
C、through and
D、to through
答案C
解析 Through and joins two preposition with a conjunction, forming through and around, to express direction.
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