全新版大学进阶英语综合教程第二册答案U5KeytoExercises

Unit 5 Pioneers of Flight

Key to Exercises

Opener

A Mighty Airplane Built by Howard Hughes in 1947 Length It was 220 feet long.

Height It was higher than a five-story building.

Weight It weighed about 60 tons.

Trip It had to make the trip from Culver city in California to the Pacific, which is 30 miles away.

Reading & Interacting

I. Understanding the Text

1. Text Organization

Story The hero When it happened How it relates to modern aviation

1Wan Hu A.D. 1500Wan Hu’ s crazy dream contains the principles of rocket-powered spaceflight.

Howard On November 2,Many of the design features of the Spruce

2Goose have been incorporated into Hughes1947

modern cargo planes.

The flying devices with flapping wings

3Leonardo About 500 years controlled and steered by human pilots he da Vinci ago designed still inspire people to pursue

their dreams of flying freely in the sky.

2. Comprehension Check

2.1 Focusing on the main ideas

The article consists of three stories about pioneers of flight. The first story is about a Chinese named Wan Hu, who made an unsuccessful attempt at spaceflight

in A.D.1500. He built a spaceship powered by 47 rockets using gunpowder. His idea was crazy, but his dream of flight came true 500 years later when China

successfully launched its first manned Shenzhou V spaceship. The second one is about the Spruce Goose, a flying boat designed to meet the need of transporting troops and materials during World War II. It was made entirely of wood and still holds the record for the greatest wingspan. Although it was never put to use, many of its design features have beenincorporated into today cargo’planes. The last is about Leonardo da Vinci, the most famous artist of the Renaissance. Apart from his great artistic work, he also drew sketches of flying devices with flapping wings controlled and steered by human pilots. Five hundred years later, a professional parachutist made a successful jump using a wood and canvas parachute based on one of da Vinci ’s designs/sketches.

2.2 Digging into detail

1.Because it was powered by rockets.

2.It was the biggest airplane ever built up to that time, and still holds the

record for the greatest wingspan. Besides, it was made entirely of wood.

3.No, because it was behind schedule and was not completed until well after

the war.

4.Da Vinci ’ s flying machines have wings that flap like birds in flight.

5.Because it is difficult for ordinary people to understand their passion for flight,

their spirit of innovation, and their courage to try and make their dream come

true.

2.3 Understanding difficult sentences

1.A

2.B

3.A

4.B

5.B

II. Focusing on Language in Context

1. Key Words & Expressions

1.1

1. He regards learning as a daily experience as well as a lifetime mission.