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问题 选择题

—Can you come to my birthday party?

—I'm sorry, __________ I can't come. [ ]

A. and

B. but

C. or

D.then

答案

答案：B

填空题

某地有居民100000户，其中普通家庭99000户，高收入家庭1000户．从普通家庭中以简单随机抽样方式抽取990户，从高收入家庭中以简单随机抽样方式抽取100户进行调查，发现共有120户家庭拥有3套或3套以上住房，其中普通家庭50户，高收人家庭70户．依据这些数据并结合所掌握的统计知识，你认为该地拥有3套或3套以上住房的家庭所占比例的合理估计是______%．
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补全对话，情景问答
给下列的问句选择合适的答语。
( ) 1. What time is it?
( ) 2. Where is the washroom?
( ) 3. How much is it?
( ) 4. What's the weather like today?
( ) 5. What size?                    		A. Size 20.
B. It's twenty yuan.
C. It's sunny.
D. It's on the first floor.                                                       
E. It's ten thirty.
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