正确答案: C

The supermarket might just play a trick so customers should be more cautious.

题目：Which of the following can we infer from the passage?

解析：解析：本题也是一个推理题，由本实例说明商场会玩一些小把戏促销，所以消费者应该对此多加小心不上当。其他的选项说法没有足够的理由在任何情况下都成立。

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学习资料的答案和解析：

[单选题]Tom: You are playing guitar well. Can you read music? Charles: No, I don't. I just listen to songs on the radio and then play them until they sound right. Tom: ______ Charles: No, really.

You're kidding

解析：解析：Tom对Charles不识乐谱也能弹得一手好吉他感到难以置信，这种情况下一般说 You're kidding或You're joking，意思是：“你在开玩笑吧!”或“这不是真的!”。其他几个选项分别表示“撒谎”、“吹嘘”、“欺骗”，都不恰当。

[单选题]She got a ______ job while she was waiting to go to the university.

temporary

解析：解析：本句的后半句话给出厂足够的信息，等待上大学之前找的工作肯定是“临时的”(temporary)。

[单选题]When the manager told her that she was the lucky customer, Mrs. White would be ______.

rather sad

解析：解析：本题为一道推理题。由于仅仅是她忘买的茶是免费的，其价值不值一提，所以她应该感到失望。

[单选题]How many tablets should one take before he goes to sleep?

two

解析：解析：本题的依据句为“For maximum nighttime and early morning relief，take two tablets at bedtime.”B选项可以得到确认。