选择题:在常年温度较低的环境中,植物可选择的适应机制有( ) 题目分类:习题答案 题目类型:选择题 查看权限:VIP 题目内容: 在常年温度较低的环境中,植物可选择的适应机制有( )A.叶片变小B.具有银白色的表皮C.具有发达根系D.增加细胞中的可溶性物质的浓度 参考答案:
Passage Four More than 6,000 children were expelled (开除) from US school last yea Passage FourMore than 6,000 children were expelled (开除) from US school last year for bringing guns an 分类:习题答案 题型:选择题 查看答案
大气因子对生物的生态作用主要表现在空气的化学成分和空气__________两个方面。 大气因子对生物的生态作用主要表现在空气的化学成分和空气__________两个方面。 分类:习题答案 题型:选择题 查看答案
If you send your friend a letter, it seems that he ______. If you send your friend a letter, it seems that he ______.A. will be greatly worriedB. will be angry 分类:习题答案 题型:选择题 查看答案