• 2022-06-09
    The United States (has sent) several (spacecrafts) into orbits (around the earth) and has collected a lot of (information)()
    A: has sent
    B: spacecrafts
    C: around the earth
    D: information
  • A

    内容

    • 0

      Most earthquakes occur __________. A: in the North Atlantic B: beneath Earth's mantle C: in the central United States D: around the outer edge of the Pacific Ocean

    • 1

      2. Jack has sent them each $200 a month to help some poor children __________. A: only in Washington B: only in England C: only in Africa D: around the world

    • 2

      While _______ the sun, the satellite has sent more than four billion bits of information back to earth. A: orbited B: being orbited C: having orbited D: orbiting

    • 3

      it has been proven that on the earth

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      49() A: information that have B: information they have C: information that has D: information that was