共同市场的特点：（）

单项选择题TheUnited Statesis a land of immigrants. So Americans eat food from many different countries.A、美国是个移民之地，所以美国人吃的食物来自许多不同的国家。B、美国是一片移民的陆地，所以美国人吃来自不同的国家的食物。

单项选择题She thanked him and hung up the phone, her tears now flowing hard. Her fingers shaking, as she slowly reached to get the card. Inside the card, she saw that he had written her a note.A、她谢了他，挂了电话，眼泪在艰难流出。她的手指在颤抖，当她慢慢地伸手去拿卡片时。在卡片里，他看到了他写给她的短信。B、她谢了他，挂了电话，眼泪夺眶而出。当她慢慢地伸手去拿卡片时，她的手在颤抖。在卡片里，他看到了他写给她的短信。

单项选择题There are a lot of students in the reading room, most of with their eyes __ on and their heads bent over their books.A、whom; fixingB、them; fixedC、whom; fixedD、them; fixing

单项选择题The cake looks ______ and it tastes even _____.A、well; goodB、nice; betterC、good; worseD、better; best

单项选择题It’s dangerous to swim in a ________ river.A、roughB、roughingC、calmD、roughed