单项选择题

Which of the following is believed to be the cause of the La Nina phenomenon

A．Heavy rain.
B．Flooding.
C．Cooling of Pacific Ocean waters.
D．Warming of Pacific Ocean waters.
<上一题 目录 下一题>
热门 试题

单项选择题
What was the purpose of U.S. first lady's visit
A．To promote mutual trust between the U.S. and the Islamic countries.
B．To strengthen the trading partnership between the U. S. and the Islamic countries.
C．To speculate on her future plan.
D．To obtain more political support.
单项选择题
When did the plane have a trouble
A．During her visit in Cairo.
B．After she finished her visit.
C．When it was preparing to take off.
D．After it took of
相关试题