受新冠肺炎疫情影响，世界上多个国家和地区开始限制本国粮食出口，引发了全球粮食的危机。2021年是"十四五"开局之年，保持粮食生产稳定和国家粮食安全意义重大。我们要"端牢中国饭碗，共筑全球粮安"。据此，完成下列问题。
（1）我国小麦和水稻集中产区的农业用地类型是________________。小麦集中产区主要分布在四大地理区域中的___________地区。
（2）图中A地形区是华北平原，该地区春季降水较少，农田需水量大，易发生__________（填"春旱"或"洪涝"），该地区大部分农作物的熟制为_________。
（3）我国小麦、水稻的种植范围广，二者集中产区的界线是_____—_______一线，该界线与我国1月______________等温线的分布最接近。
（4）保持粮食生产稳定和国家粮食安全意义重大。下列关于我国农业说法正确的是__________________
①农业是我国国民经济的基础
②农业发展要因地制宜
③农业地区分布主要表现在东牧西耕，南北差异大
④只有农业实现了现代化，才能说中国实现了现代化
A.①②③ B.①②④
C.①③④ D.②③④
（1）耕地 北方
（2）春旱 两年三熟
（3）秦岭—淮河 0℃
(4)B
Dogs are the best pets of humans. They come in all sizes. Some dogs are as small as a football, and others are as tall as a desk. Dogs’ fur (毛) is different, too. It can be long and soft, or smooth and hard. People don’t mind the kind of fur, because all dogs are good to hug.
请在字典中查一下这个词。
我喜欢甜食， 你知道的。
去年， 彼得在旅途中和许多人交了朋友。
我叫托尼· 史密斯， 史密斯是我的姓。
我们在课上回答问题时应该起立
Tea and coffee are two of the most popular drinks in the world. However, people usually like one more than the other. These drinks also have very different uses.
People in the office usually sit for most of the day when they work. But this is bad for a person’s health. When people sit for too long every day, they don’t move very much. So it is easy to start getting fat. Sitting too long is also bad for their work because it makes them want to sleep. When this happens, people may make more mistakes in their work or spend more time finishing their work. Companies need workers to be healthy, so how do they fix the problem?
