题目

 根据句意，用括号中所给词的适当形式填空 1. When we’re in great danger, we should learn to protect ___________.   ( we ) 2. Thanks to the government, some families would be permitted to have two ________. ( child ) 3. In her speech, “ As the Chinese saying goes, it is _________ to travel 10,000 miles than to read 10,000 books.’’ the US First Lady Michelle Obama said.     (good) 4. _________, the news about the flight MH370 has attracted the public attention.   (recent) 5. My eyes were _________ with tears, because of her moving story.   (fill)阅读图文材料，完成下列要求。复种指数是衡量耕地集约化利用程度的重要指标，复种指数的计算方法为：全年播种农作物的总面积/耕地总面积×100%。复种指数大，说明耕地利用率高；反之，耕地利用率低。（1）指出我国耕地复种指数的变化特点。（2）试分析东部地区耕地复种指数下降的主要原因。（3）通过增加现有耕地的复种指数来提高粮食产量，其效益比开垦荒地好。试分析原因。