题目内容
（请给出正确答案）
Listen to Track 67.
A．It is not obvious how whales find their way.
B．Different whales have different ways of locating food.
C．Whales have a poor sense of orientation.
D．Scientists have not been able to track the whales.
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更多“Listen to Track 67.A．It is not…”相关的问题
第1题
Listen to Track 66.
A．She is not an expert on what she is about to discuss.
B．She will discuss only what is relevant to her main point.
C．She thinks her students already understand her point.
D．She will not repeat what was discussed in previous classes.
第2题
he right direction? Choose 3 answers.
A．Using magnetic fields as a guide
B．Recognizing coastal landmarks
C．Following the heat of the tropical water
D．Listening to sounds that bounce off of the land
E．Following the migrating plankton
第3题
eeds to be answered?
A．Whether or not whales have good eyesight
B．How long baleen whales are able to survive without food
C．How fast baleen whales can swim compared with other kinds of whales
D．Whether moving south saves whales more energy than staying north
第4题
aleen whales?
A．The need to avoid lower water temperatures
B．The need to raise young in a suitable environment
C．The need to find better feeding grounds
D．The need to find a mating partner
第5题
What does the professor mainly discuss?
A．Why some whales do not migrate
B．How and why baleen whales migrate
C．How baleen whales communicate with other whales
D．How different whales hunt for their food
第6题
What is the professors opinion of retraining and relocating unemployed people?
A．It is more expensive over time than blocking imports.
B．It can sometimes have unintended consequences.
C．It is one possible way to adapt to an increase in imports.
D．It maintains the production levels of inefficient industries.
第7题
What does the professor imply about the effect of increasing imports?
A．It will eventually result in a decrease in exports.
B．It is not necessarily bad for the economy.
C．It creates domestic economic problems that are easily solved.
D．Its impact on the economy is immediately apparent.
第8题
What does the professor imply about the sugar industry in Florida?
A．It is a good source of high-paying jobs.
B．It should not be protected from competition from imports.
C．It is a good example of the effect of international specialization.
D．It is managed cost effectively.
第9题
According to the professor, what is a negative result of limiting imports?
A．The pace of technological innovation slows down.
B．The number of domestic low-paying jobs decreases.
C．People move to areas where income is lower.
D．The potential income from exports is reduced.
第10题
According to the professor, why do many people want imports to be regulated?
A．To allow for price increases in domestic products
B．To make the prices of exports more competitive
C．To protect against domestic unemployment
D．To encourage the economic growth of certain industries
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