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

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

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

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.

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.

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.

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.

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

What is the lecture mainly about?

A．Ways to limit the expansion of international trade

B．How restrictions on international trade can cause economic harm

C．Factors that influence the distribution of exports

D．Why international trade has expanded in recent years

What will the woman do to help the man?

A．Lend him a book on computers

B．Give him a list of computer courses

C．Give him a list of student assistants

D．Recommend a computer instructor