分封制在周初巩固了周朝统治，在后期扩大了西周疆域；在后期却造成了分裂割据局面，瓦解了周朝的统治，造成这两种截然不同结果的根本原因是 ( )
| A．诸侯地位的变化 | B．井田制的兴衰 | C．生产力水平的提高 | D．生产关系的变化 |
如果你想了解今天是几月几日，你应该问：
A. What is the date today? B. What day is it today? C. What is it?
如果你想了解别人最喜欢吃什么，你可以问：
A. What do you like? B. What’s your favourite food? C. Do you like this?
What is Wu Yifan donging ? He’s
A.taking pictuersB.take pictuersC.taking a pictures
The _____ day of a week is Wednesday.
A.firstB.secondC.third
Do you see _____ elephants?
A.someB.any C.one