2023届北京东城区高三二模英语试卷
学校:___________姓名：___________班级：___________考号：___________
8．A．returned B．spread C．froze D．disappeared 9．A．confused B．disappointed C．anxious D．bored 10．A．house B．car C．hospital D．office
二、用单词的适当形式完成短文
Stick the Landing Night Sky Tonight
showcaseEcosystem Investigators
the environmental cost of air travel. But there’s a catch. Those wings must twist(弯曲) in a very precise way that makes them hard to produce.
Ethan became fascinated by this kind of airplane design when he saw a video of NASA’s Prandtl-D aircraft gliding gracefully through the air without a tail. “I just thought that was really cool,” says Ethan. He wondered if he could find a simpler way to achieve the same tailless flight.
“Essentially what I did was just trial and error,” Ethan says. Using a computer model of an airplane wing, he adjusted the angle of twist along the wing until it could achieve tailless flight. Usually, such a wing requires a continuous distribution of wing twist. But he could achieve a similar effect with wings that had just a few sections of twist. “It’s super easy to make,” Ethan says.
In his garage, Ethan built model airplanes using rubber materials and packing tape totes this design. “Seeing the plane in the air was pretty cool,” Ethan says. “It just flew really, really well.”
Lighter, more efficient planes could open the door to other air travel innovations. “It’s been a long-term goal of mine to build a solar plane that can fly through the day powered by solar panels on its wings,” Ethan says. “It is absolutely possible for a really efficient plane.”
To other teens who have big engineering ideas to explore, Ethan always says, “Don’t ever give up.” Even when some machinery feels impossible to understand, it help store member that the world’s greatest inventors are only human, too. “Also, just make sure you love whatever you do,” Ethan adds. “That’ll make pursuing everything a lot easier.”24．What is one advantage of the tailless airplane?
A．It makes aircraft design easier.
B．It is environmentally friendly.
C．It reduces production costs.
D．It promotes flight stability.
25．What drew Ethan’s attention to the tailless airplane design?
A．The breakthrough in aircraft materials.
B．The flight of an aircraft in a video.
C．The prize for original design.
D．The desire for innovation.
26．In Ethan’s opinion, what help inventors realize their dreams?

版权声明：本站内容均来自互联网，仅供演示用，请勿用于商业和其他非法用途。如果侵犯了您的权益请与我们联系QQ:729038198，我们将在24小时内删除。