杭州北高峰高于海平面536米记作+536米,那么吐鲁番艾丁湖湖底低于海平面150米记作 [ ]
A.150
B.﹣150
C.150米
D.﹣150米
答案:D
She didn't recognize the man who hit her because she could only ____ a dark shape moving towards her. [ ]
A. make out
B. turn out
C. set out
D. bring out
逻辑斯谛曲线常被划分为哪几个时期,各代表什么生态意义