L1：

Lecture 1

第一题

What is the main topic of the lecture?

AThe educational value of interacting with wildlife

BDifferences between ecotourism and conventional tourism

CThe role that tourists can play in preserving natural habitats

DPositive and negative consequences of a new type of tourism

第二题

Why does the professor mention whale watching?

ATo highlight economic advantages of ecotourism

BTo illustrate how ecotourism can affect people’s feelings about animals

CTo show that ecotourism sometimes involves difficult economic choices

DTo emphasize the global nature of the tourist industry today

第三题

According to the professor, what happens when dolphins attempt to avoid boats of ecotourists?

AThe dolphins become vulnerable to sharks.

BThe dolphins often become lost.

CThe dolphins collide with other boats and other obstacles.

DThe dolphins waste valuable energy.

第四题

According to researchers, what might be the reason for low survival rates among dolphin calves in Shark Bay, Australia?

AThey are abandoned by their social group.

BThey are exposed to harmful pollutants.

CThey do not learn natural feeding behaviors.

DThey never acquire a fear of predators.

第五题

What does the professor imply about the changes in reproductive rates among certain populations of California sea lions?

AThe changes have reduced the sea lion populations to a more manageable size.

BThere may be no way to reverse the changes.

CThe rates might increase if tourism were limited.

DThe changes have led to an increase in ecotourism.

第六题

Why does the professor say this:

ATo question the view that all types of tourism are environmentally harmful

BTo question the view that participation in an ecotour leads to environmental activism

CTo suggest that ecotour leaders need to be committed conservationists

DTo suggest that more people would sign up for ecotours if the tours were less expensive