单项选择题

Questions 18 to 20 are based on the following passage. At the end of the passage, you will be given 15 seconds to answer the questions.
Now, listen to the passage.
The pyramids were built

A．before the Egyptians developed a sophisticated technology.
B．after the Egyptians developed a sophisticated technology.
C．to house the tombs of all ancient Egyptian kings and nobles.
D．to keep mummies safe forever.

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单项选择题

Usually waiters and waitresses expect their tip to be

A．25 % of the bill.
B．15 % of the bill.
C．50% of the bill.
D．20% of the bill.

单项选择题

What would the bank do if wages grew too fast

A．It would increase interest rates again.
B．It would cut interest rates again.
C．It would cut wages again.
D．It would increase wages by 2 to 3 percent.

Questions 18 to 20 are based on the following passage. At the end of the passage, you will be given 15 seconds to answer the questions. Now, listen to the passage. The pyramids were built 您的浏览器不支持 audio 元素。

Questions 18 to 20 are based on the following passage. At the end of the passage, you will be given 15 seconds to answer the questions.
Now, listen to the passage.
The pyramids were built