某些特殊情况如土壤贫瘠、干旱、病虫害、火灾等的影响,林木也会过早结实。这是因为()生长受到强烈抑制,个体早衰的结果,属不正常现象。
参考答案:营养
教师节太阳直射点的移动情况是
A.在北半球并在向北移动
B.在北半球但在向南移动
C.在南半球并在向南移动
D.在南半球但在向北移动
You can find whatever you need at the shopping centre, _____ is always busy at the weekend. [ ]
A. that
B. where
C. what
D. which