题目内容
（请给出正确答案）
Why have there been difficulties with the machinery for the new product？
A．It has been necessary to meet regulations.
B．It is difficult to find suitable equipment.
C．It keeps breaking down.
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A．No important steps to stop climate change have been taken.
B．Many droughts and floods have been reported worldwide.
C．No deal on climate change was struck at the Copenhagen conference.
Why does the woman suggest advertising on TV？
A．Their competitors have long been advertising on TV.
B．TV commercials are less expensive.
C．Advertising in newspapers alone is not sufficient.
D．TV commercials attract more investments.
According to the man, why is the price higher than half a year ago？
A．The cost of production has been raised.
B．Other companies' prices have been raised.
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D．He doesn't know.
Why have retired people been coming to spend their last days in Florida？
A．They can afford to do so on their pensions.
B．They are provided with a decent sum of pensions.
C．The food there is good for their health.
D．They can earn some extra money there.
Why did the resistance of insects to man - made insecticides develop so rapidly？
A．Because farmers use less insecticides now.
B．Because farmers have been using insecticides for many years.
C．Because insects are using the mechanisms against poisons produced by plants to. deal with insecticides.
D．Because insects have been eating plants for many million years.
Why didn't you make me a telephone call yesterday？ I ______ about it.
A．should be told
B．ought to have been told
C．should have told
D．ought to be told
A．must
B．oughtn't to
C．may
D．can't
A．must
B．oughtn't to
C．may
D．can't
Why do people think that Venice is so great？
A．Because it is a famous tourist attraction.
B．Because you can reach anywhere by boat.
C．Because it is well-known for its merchants.
D．Because all the mistakes have been removed.
