听力音频：

https://mp.weixin.qq.com/s/l60NYyttDfg2itptnygLRA?token=1029705590&lang=zh_CN

L3：

Lecture 3

第一题

What is the lecture mainly about?

AThe discovery of potential flaws in Wegener’s theory

BAn idea that challenged the theory of continental drift

CA new technology that caused an old theory to be reconsidered

DA theory that was at first dismissed by the scientific community

第二题

Why does the professor mention a jigsaw puzzle?

ATo explain a technique used by mapmakers in the 1600s

BTo help explain the origin of Wegeners theory

CTo suggest that Wegener’s theory was complicated

DTo emphasize the originality of Wegener’s theory

第三题

What question about plant and animal fossils did Wegener’s theory attempt to answer? Awhy there are large numbers of fossils at the tip of South America

BWhy fossils are difficult to find in some regions of Earth’s crust

CWhy similar fossils can be found in different parts of the world

DWhy the fossil record is incomplete in both South Africa and South America

第四题

What does the professor imply about contraction theory?

AIt was disproved by new scientific discoveries.

BIt helped explain why continental drift occurs.

CIt was supported by evidence from different scientific fields.

DIt was not accepted until late in the twentieth century.

第五题

What did Wegener’s theory and contraction theory both try to explain?

AWhy Earth’s molten body cooled so quickly

BHow Earth’s mountain ranges formed

CWhy Earth’s surface no longer continues to shrink

DWhy depressions in Earth’s surface are not as deep as mountains are high

第六题

What does the professor say are the reasons that other scientists did not accept Wegener’s theory? Select 3 answers

AIt was based on evidence originally gathered in the 1600s.

BIt did not meet the standards of scientific study favored at that time

CIt relied too much on experiments conducted in the laboratory.

DIt involved fields of study outside of Wegener’s area of expertise

EIt did not provide an explanation for why the continents moved.