Usually it cannot because the outside of the earth is too thick and strong. But in some places the outside of the earth is and weak. A. thin B. thick C. flat D. water 【查看更多】

 

題目列表(包括答案和解析)

Usually it cannot (get out) because the outside of the earth is too thick and strong. But in some places the outside of the earth is ____ and weak.
    A. thin     B. thick      C. flat     D. water

查看答案和解析>>


同步練習(xí)冊(cè)答案