2. 外语
  3. The passage focuses on comets primarily in terms of their Which of the following occurred as the ices from Halley’s Comet evap

The passage focuses on comets primarily in terms of their Which of the following occurred as the ices from Halley’s Comet evap

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问题  The passage focuses on comets primarily in terms of their
  Which of the following occurred as the ices from Halley’s Comet evaporated?
选项 A、Black dust was left on the comet’s surface.
B、The nucleus of the comet expanded.
C、The tail of the comet straightened out.
D、Jets of gas caused the comet to increase its speed.
答案A
解析
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