官方真题Official3托福听力Lecture1文本+真题+答案解析

官方真题Official3托福听力Lecture1题目文本

1.What does the professor mainly discuss?

a) Major changes in the migratory patterns of hummingbirds

b) The adaptation of hummingbirds to urban environments

c) Concern about the reduction of hummingbird habitat

d) The impact of ecotourism on hummingbird populations

2.What does the professor imply might cause a decrease in the hummingbird population?

a) An increase in the ecotourism industry

b) An increase in the use of land to raise crops and cattle

c) A decrease in banding studies

d) A decrease in the distance traveled during migration

3.What does the professor say people have done to help hummingbirds survive?

a) They have built a series of hummingbird feeding stations.

b) They have supported new laws that punish polluters of wildlife habitats.

c) They have replanted native flowers in once polluted areas.

d) They have learned to identify various hummingbird species.

4.What way of collecting information about migrating hummingbirds does the professor mention?

a) Receiving radio signals from electronic tracking devices

b) Being contacted by people who recapture banded birds

c) Counting the birds that return to the same region every year

d) Comparing old and young birds’ migration routes

5.What does the professor imply researchers have learned while studying hummingbird migration?

a) Hummingbirds have totally disappeared from some countries due to recent habitat destruction

b) Programs to replant flowers native to hummingbird habitats are not succeeding.

c) Some groups of hummingbirds have changed their migration patterns.

d) Some plant species pollinated by hummingbirds have become extinct.

6.What does the professor imply when she say this?

a) There is disagreement about the idea she has presented.

b) She does not plan to discuss all the details.

c) Her next point may seem to contradict what she has just said.

d) The point she will make next should be obvious to the students.

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