第五篇

• 1、

  Paragraphs l & 2 ________

• 2、

  Paragraph 3 ________

• 3、

  Paragraph 4 ________

• 4、

  Paragraph 5 ________

• 5、

  One advantage of CD-RWs is that they can ________

• 6、

  The author predicts it will not ________ before a

• 7、

  The laser beam-emitting device and the receiver ar

• 8、

  Space probes could not ________ without using digi