水稻倒二叶对产量的贡献率剑叶为22%、倒三叶为17.7%。
参考答案:错
What her most was that nobody had even bothered to tell her about the changed timetable.
A.upset
B.ignored
C.shocked
D.trapped
《中小学校生活设施基本标准》规定,学生宿舍设室外厕所的,厕所距离宿舍不超过()米,并应设有路灯。