A.斯密B、大卫·李嘉图C、里昂惕夫D、保罗·萨缪尔森绝对优势理论的主要代表人物是()A、亚当.斯密B、大卫·……

未分类题It can be inferred from the second paragraph thatA．low-altitude clouds are the main causes of global warming.B．increase of cloud cover can slow down the climate change.C．global warming will increase cloud cover.D．increase of cloud cover can speed up the global warming.

判断题幼儿园的管理层次中，基层为具体工作层，即各班级或班组。()

未分类题The new study published in Science indicates thatA．low-level clouds tend to warm the ocean.B．more cloud cover means a warmer world.C．the warming of ocean is a threat to the low-level clouds.D．the Pacific Ocean has more low-level clouds than before.

未分类题According to the second paragraph,A．schools should do more in their disaster preparedness.B．the government has been well prepared for disasters.C．parents do not care about their children enough.D．schools' former plans for disasters do not make sense at all.

判断题我国幼教行政体制与管理的原则：“地方负责，分级管理和有关部门分工负责”的原则。()