单项选择题

It can be inferred from the text that the retail price o{ petrol will go up dramatically if ______.

A．price of crude rises
B．commodity prices rise
C．consumption rises
D．oil taxes rise
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单项选择题
The estimates in Economic Outlook show that in rich countries ______.
A．heavy industry becomes more energy-intensive
B．income loss mainly results from fluctuating crude oil prices
C．manufacturing industry has been seriously squeezed
D．oil price changes have no significant impact on GDP
单项选择题
The author uses the example of a monkey to argue that robots are ______.
A．expected to copy human brain in internal structure
B．able to perceive abnormalities immediately
C．far less able than human brain in focusing on relevant information
D．best used in a controlled environment
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