关于质量，下列说法正确的是（　　）

某实验中，老师请同学们用试管取稀盐酸做性质实验（没有告诉用量），下面四位同学的操作中最符合要求的是（　　）

宋元时期，江苏吴郡“地沃而物移，稼则刈麦种禾，一岁再熟”。这证明该地区在推行（    ）

    Welcome to England! The weather of England often changes. It can be rainy, sunny, cloudy, windy, warm, foggy or cold at any time of year. If it's raining when you get up in the morning, it can be hot and sunny in the afternoon.

    In England, shops are usually open from 9:00 in the morning to 5:30 in the afternoon. On Sundays some shops are open from 10:00 a. m. to 4:00 p. m. But most shops are closed. Banks, museums（博物馆）or other places are open from 10:00 a. m. to 5:00 p. m. You can go to the parks at any time.

    All the cities have buses, trains and taxis（出租车）. People wait in line (排队等候) for buses and they will not be happy if you come to the front from the end of the line. Don't forget that, traffic goes on the left.

Be careful and enjoy your time here.

根据短文内容，完成任务。