单项选择题

Outside my office window, there is a fire ______ on the right.

A．ladder
B．escape
C．steps
D．stairs
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单项选择题
It can be seen form the passage that in the second stage ______.
A．some traditional goods and services were not successful when provided by the home economy
B．the market economy provided new goods and services never produced by the home economy
C．producing traditional goods at home became socially unacceptable
D．whether new goods and services were produced by the home economy became irrelevant
单项选择题
During the second stage, if the family wanted to consume new goods and services, they had to enter the marketplace ______.
A．as wage earners
B．both as wage manufacturers and consumers
C．both as workers and purchasers
D．as customers
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