Lesson 83
    閱讀理解
    ? 答案與解析
    1. D。作者把地球形容為just a small bit of dust，因此可知D 為正確答案。
    2. A。只有A 項(xiàng)的闡述符合對(duì)星系的定義。
    3. C。從文章第一段The Milky Way has about thirty billion stars like our sun 可知，C 項(xiàng)為正確答案。
    4. C。文章第二段提到Instead of kilometers, we have light-years.
    5. B。詳見文章最后一句。
    英漢翻譯
    1. I forgot to take an umbrella.
    2. He opened the light, but he couldn’t see anyone.
    3. Carol has already had lunch.
    4. He always stays at home on holiday.
    5. Have you had any tea?
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    6. Have you packed the suitcase?
    7. They are trying to mend it.
    8. Do you have lunch with us?