题目内容
El Nino phenomenon doesn't occur in a perfectly regular pattern. It seems to happen every 2 to 7 years.
查看答案
搜索结果不匹配？点我反馈
更多问题
The ultraviolet radiation from the sun can produce long-term effects on human beings and animals, but not on plants.
Speechescanbearrangedinproblem-solutionorder.
Somespeechesareorganizedintermsofcause-to-effectoreffect-to-causereasoning.
Youmayusespaceorderwhenyourmainpointsareorganizedaccordingtotheirphysicalproximityorgeography.
微信支付 
支付宝支付