全新版大学进阶英语综合教程第二册答案U5KeytoExercises

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Key to Exercises Opener Length Height Weight

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

It was higher than a five-story building.

It weighed about 60 tons.

It had to make the trip from Culver city in California to the Pacific,

which is 30 miles away.

Unit 5 Pioneers of Flight

Trip

Reading & Interacting I. Understanding the Text 1. Text Organization Story

The hero

When it happened

How it relates to modern aviation Wan Hu’ s crazy dream contains

1

Wan Hu

A.D. 1500

the

principles of rocket-powered spaceflight. Many of the design features of the Spruce

Goose have been incorporated into

modern cargo planes. The flying devices with flapping wings

Howard

2

Hughes

Leonardo

3

da Vinci

On November 2, 1947

About 500 years ago controlled and steered by human pilots he

designed still inspire people to pursue their dreams of flying freely in the sky.

2. Comprehension Check

2.1 Focusing on the main ideas

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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

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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 ’sdesigns/sketches.

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

1.1

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

2.B

3.A

4.B

5.B

2.2 Digging into detail

II. Focusing on Language in Context 1. Key Words & Expressions

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