单选题

A、 He was asked to leads group of inexperienced carets there.
B、 It was the first cave that he had ever visited.
C、 Clearly marked trails made it easy to explore.
D、 lie hoped to make a discovery.

【正确答案】 D

【答案解析】[听力原文]22-25
M: Hi, Cathy. I am here because I visited caves all over North America. Since you are going to study cave formations, Dr. Bow asked me to come to share some of my experiences with you.
W: Hi, Bill. So wonderful! I can't wait to hear about it!
M: Recently, I visited the La Chagire Cave in New Mexico, (22)my dream has always been to discover a new passage way. I had a chance there, because La Chagire is so large that discoveries are frequently made there.
W: Was it newly discovered?
M: The cave was not even discovered until 1986. However, people in that area had figured that there must be a cave nearby, (23)because of the strong wind that blew from behind the huge rock that covered the entrance. Enormous amount of air enter and exit the cave in order to maintain balance of the pressure with the inside air.
W: You must have had to fight heavy wind when you were in the cave.
M: Exactly, I had to fight 45 mile per hour winds. After all that effort, I had to be extremely careful maintaining my energy level. (24)People who are tired tend to be careless, and may be more concerned about getting out of the cave than taking care of it.
W: Anything interesting or thrilling in the cave?
M: There are formations in La Chagire that look like ocean waves, Christmas trees and other stuff no one has ever seen before.
W: Caves are normally created by carbonic acid, right?
M: (25)But this cave sculpted out by very powerful sulfuric acid that swells up from below.
22. Why was the lecturer especially excited about visiting La Chagire cave?

[听前猜测] 选项内容表明此题可能考查女士与其探察的洞穴的关系。
[精解] 根据男士所说可知，能够探索出the La Chagire Cave的一条新通道是他的宿愿。文中的discover与D)中的make a discovery是同义替换。

A、 It's easy to locate
B、 It's in a very windy area.
C、 It's exceptionally beautiful.
D、 It's partially covered by water.

【正确答案】 D

【答案解析】[听力原文]
What did the speaker say about the entrance into the cave?

[听前猜测] 各选项均以it 为主语，因此在听的时候需确定it 所指代的内容。根据选项内容可推测本题可能考查该洞穴的某一特征。
[精解] 根据男土所说可知，鉴于从遮蔽入口的巨石后刮出很大的风，探险者可以得出该区域应当有一个洞穴的结论。文中the strong wind与B)中的very windy是同义替换。

A、 They are more likely to damage the cave.
B、 It's hard for them 'to stay awake.
C、 They tend to break their equipment.
D、 They may imagine seeing things that aren't really there.

【正确答案】 A

【答案解析】[听力原文]
What did the speaker say about the cavers who get tired?

[听前猜测] 根据选项内容可推测本题可能考查某些探险者在洞穴中的经历。
[精解] 根据男士所说可知，疲倦的探险者往往会很粗心，并且因为一心想着离开洞穴而疏忽了保护洞穴。文中的careless与A)中的more likely to damage the cave相对应。

A、 They are newer than the formations in most caves.
B、 They were formed by sulfuric acid.
C、 They have been artificially preserved.
D、 They are smaller than those in any other cave.

【正确答案】 B

【答案解析】[听力原文]
What makes the formations of La Chagire so unusual?

[听前猜测] 各选项均以they为主语，因此在听的时候需确定they所指代的内容。根据选项内容可推测本题可能涉及该洞穴与其它洞穴的不同之处。
[精解] 根据男士所说可知，与那些由碳酸构成的普通洞穴不同的是，La Chagire是由硫酸构成的。文中sculpted out与B)中的formed是同义替换。