2021年是中国加入世界贸易组织20周年。“入世”20年，中国成为120多个国家和地区的主要贸易伙伴，对外直接投资从全球第26位上升到第1位，对世界经济增长的年均贡献率接近30%。这体现了（）
①当今世界是开放的、发展的、紧密联系的世界 ②我国以实际行动推动建设开放型世界经济 ③改革开放不仅深刻改变了中国，也深刻影响了世界 ④封锁、孤立、以邻为壑的现象已经消失
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?
