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1題
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
此題為多項選擇題。請幫忙給出正確答案和分析,謝謝!
第2題
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.
此題為多項選擇題。請幫忙給出正確答案和分析,謝謝!
第3題
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.
此題為多項選擇題。請幫忙給出正確答案和分析,謝謝!
第4題
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.
此題為多項選擇題。請幫忙給出正確答案和分析,謝謝!
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