She _____ have left school, for her bike is still here.[ ]

A. wouldn’t

B. can’t

C. shouldn’t

D. needn’t

制定科学的垃圾收运方案，保证垃圾及时收集外运，且无遗撒，无遗漏，做到（）同步。

A.收集与存放

B.收集与拉运

C.存放与拉运

D.收集与堆放