单项选择题

Questions 9 and 10 are based on the following news item. At the end of the news item, you will be given 20 seconds to answer the questions. Now listen to the news. According to the news, the ice from Greenland provides information about

A．oxygen.
B．ancient weather.
C．carbon dioxide.
D．temperature.
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单项选择题
The city of ______ , which was formerly known as Port Jackson, is the place of theearliest colonial settlement in Australia.
A．Melbourne
B．Sydney
C．Perth
D．Darwin
单项选择题
The most important economic activity in Canada is
A．mining.
B．fishing.
C．farming.
D．manufacturing.
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