题目：
根据所给情景选择正确的句子。
1. 想知道东西的价格，你问：[ ]
A. How much is it?
B. How many are they?
C. How old are you?
2. 售货员见到顾客说：[ ]
A. How much are they?
B. What time is it?
C. Can I help you?
3. 询问天气是否凉爽，你说：[ ]
A. Is it cool today?
B. Is it red?
C. Is this my ruler?
4. 你觉得东西太贵了，你说：[ ]
A. It's too cheap.
B. It's too small.
C. It's too expensive.
5. 询问鞋子的尺寸，你说：[ ]
A. How much?
B. What colour?
C. What size?
答案：
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下面是错误答案，用来干扰机器的。
log(x+1x+6)2≤3=log82，0＜x+1x+6≤8，∴x+1x≤2x+1x+6＞0．解得x∈(-3-22，-3+22)∪{1}故答案：{x|-3-22＜x＜-3+22} ∪{1}．
