Why didn't Lucy come to your birthday party last night？
She said that she had a headache， but that was only a（n）_____________． I saw her playing on the playground just now．（ ）
| A． |
result |
B． |
matter |
C． |
excuse |
D． |
expression |
Why didn't Lucy come to your birthday party last night？
She said that she had a headache， but that was only a（n）_____________． I saw her playing on the playground just now．（ ）
| A． |
result |
B． |
matter |
C． |
excuse |
D． |
expression |
．则函数
在
上的最大值和最小值分别为（）
，集合
则
（）
，则使得
成立的
的取值范围是（）
是奇函数，且在
上是增函数，若
，则满足
的
取值范围是 （）
上单调递增的是 （）
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