单项选择题


Smoking may induce lung cancer．

A．Right
B．Wrong
C．Not mentioned
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单项选择题
Paragraph 4 __________.
Paragraph 4 __________.
单项选择题
Which of the following statements is NOT meant by the author，according to the second para—graph
A．Wood wets the ruel of choice before coal．
B．The use of coal is declining．
C．Coal is the most environmentally unfriendly fuel next to oil．
D．Coal reserves are plentiful and will be likely to become the major fuel of choice．
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