题目

---Is this your pencil case, Tim? ---No, it isn’t.. ____ is over there.   A. Mine          B. My           C. Myself           D. I 答案：A下列各式中表达正确的是A．7.2m=7.2×100=720cmB．7.2m=7.2m×100=720cmC．7.2m=7.2×100cm=720cmD．7.2m=7.2m×100cm=720cm