• 2022-06-06
    When did life begin?
    A: 13.8 billion years ago.
    B: Between 13.8 and 10 billion years.
    C: Between 10 and 4.5 billion years.
    D: Between 4.5 and 3.5 billion years.
  • D
    本题目来自[网课答案]本页地址:https://www.wkda.cn/ask/jpyyemjxoeytxto.html

    内容

    • 0

      What do we learn about the number of international students in China in 2017? A: It has increased a little than 10 years ago. B: It is as three times as 10 years ago. C: It is the same as 10 years ago . D: It has more than doubled during the past 10 years.

    • 1

      The first period usually begins _____________.( ) A: between10 and 16 years of age B: between 12 and15 years of age C: between 15 and 16 years of age D: between 10 and 12 years of age

    • 2

      How many years had he lived in Beijing A: 20 years. B: 15 years. C: 10 years.

    • 3

      It’s a(n) ________________ idea, but imagine getting into a spaceship and traveling back in time 4.5 billion years. A: squash B: preposterous C: infinite D: abrupt

    • 4

      The Milky Way began to form about 11.5 billion years earlier than Earth.