She was almost 90, but still very __

单选题 She was almost 90, but still very ____.

A、 robot

B、 robber

C、 robust

D、 robbin

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单选题 Who is the author of Birdflight as the Basis of Aviation?

A、Orville Wright

B、Wilbur Wright

C、Otto Lilienthal

D、Louis Bleriot

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单选题 Which of the following is NOT true about the early passenger flight services?

A、The cabin experience, because of the noise and turbulence, was not good.

B、The passenger flight was unprofitable and no airplane could carry enough passengers to cover costs.

C、Aircraft had a speed advantage and linked European cities.

D、Passengers might be subjected to extreme temperature, like stifling heat or freezing cold.

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单选题 How were the Italian aviators treated after they returned from the war between Italy and Turkey?

A、They were admired by the Italian troops, but opposed by the common people.

B、They were highly treated by the Italian government, but did not enjoy high social status.

C、They were regarded as heroes by Italian patriots although they faced little opposition in the war.

D、They received a large bonus from the government.

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单选题 Who is the first person flying across the English Channel?

A、Orville Wright

B、Wilbur Wright

C、Otto Lilienthal

D、Louis Bleriot

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单选题 According to Unit 1, what gave the British an advantage during WWII?

A、Small broadcasting beacons.

B、Advanced aircraft.

C、Powerful armies.

D、Multi-cavity magnetrons.

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单选题 Which of the following is NOT the reason why many European countries kept on developing commercial aviation after the collapse of the military market?

A、To maintain their national prestige.

B、To get prepared for possible future wars.

C、To boost the aviation industry.

D、To find a means to bind together their remote empires.

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单选题 The author introduces the "flying machine" at the beginning of the text in Unit 1 to ____.

A、prove that people already dreamed of making a machine that could fly centuries ago

B、show that Roger Bacon and Leonardo da Vinci already invented machines that could fly

C、manifest that human beings can fly with the flapping of wings

D、illustrate the importance of flying to people

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单选题 Which of the following was NOT the role the man-carrying lighter-than-air flying machine played in the 18th century?

A、Delivering passengers

B、Anti-submarine patrols

C、Delivering mail

D、Observing the enemy

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