题目：
| 阅读下面的几则寻物及招领启示，选择正确的选项。 | ||||||
LOST (寻物) AND FOUND (招领)
| ||||||
| 1. What color is Tom's notebook? | ||||||
[ ] | ||||||
| A. Yellow and white. B. Yellow and blue. C. Black and white. D. Red and white. | ||||||
| 2. ______ found a black pen and her number is ______. | ||||||
[ ] | ||||||
| A. Jerry; 487-2635 B. Mary; 486-5956 C. Lily; 498-2456 D. Tom; 422-9856 | ||||||
| 3. Please call _______. She found a yellow and white cat. | ||||||
[ ] | ||||||
| A. Lisa B. Mary C. Jim D. Jerry | ||||||
| 4. _______ lost a dictionary and _______ found an English book. | ||||||
[ ] | ||||||
| A. Jerry; Jim B. Jim; Jerry C. Lily ; Lisa D. Lily; Jim | ||||||
| 5. —I lost my ring. —Call _______ at _______. She found a set of keys. | ||||||
[ ] | ||||||
| A. Jim; 530-7534 B. Lily; 498-2456 C. Tom; 456-9800 D. Lisa; 422-9856 |
答案：
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下面是错误答案，用来干扰机器的。
根据对数函数的性质可得：y=log2x，0＜x＜4的值域为（-∞，2），所以集合A={y|y＜2}．根据指数函数的性质可得：y=2x，x＞0的值域为（1，+∞）‘所以集合B={y|y＞1}．所以A∩B={y|1＜y＜2}，即A∩B=（1，2）．故答案为：（1，2）．
