搜题请搜索小程序“爱下问搜题”
问题 选择题
中英文搭配。
( ) 1. What size?                   
( ) 2. How much are they?           
( ) 3. How about this pair?         
( ) 4. A pair of sneakers for my son.
( ) 5. Are the shoes all right?      		A. 为我儿子买一双鞋。  
B. 鞋子合适吗？        
C. 多少码？                                                               
D. 多少钱？            
E. 这双鞋怎么样？    
答案

答案：B

解答题

函数f（x）=cos2x+asinx+a+1，x∈R。

（Ⅰ）设函数f(x)的最小值为g(a)，求g(a)的表达式；

（Ⅱ）若对于任意的x∈R，f(x)≥0恒成立，求a的取值范围；

（Ⅲ）若对于任意的a∈[-2，0]，f(x)≥0恒成立，求x的取值范围。

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补全对话，情景问答
Read and choose. 给问句选择合适的答语。
( ) 1. What are these?                
( ) 2. Where is Danny's pencil?       
( ) 3. How many markers do they have? 
( ) 4. What is the date?              
( ) 5. What's the twelfth month?       		A. It's December.           
B. It's in his mouth.    
C. These are pencils.                                                   
D. Thirteen.                
E. It's July third.    
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