题型:语法填空(语篇) 题类: 难易度:普通
全效学习 八年级下册英语强基专项突破练+热点冲刺组合练 时文组合训练(六)
Scientists in Japan have now created cockroaches (蟑螂) powered by the sun. The scientists can control the living insects from far away they have small implants (植入物). This sounds very amazing. why do we need this kind of cockroach?
Cockroaches can go some places where humans cannot fit. So, these remote-controlled (可遥控的)insects could help out humans in certain (situation). For example, they can look people in search and rescue operations(搜救行动).They could also go into (danger) areas.
The scientists in this project (finish) a great deal so far. However, this is not the end of (they) work. They still don't stop finding out way to improve the cockroaches.
Some people might wonder if we are being unkind (use) cockroaches this way. Researchers are still testing to decide if these and other insects feel pain or have feelings. They have already found that cockroaches have different personalities (个性) and can make decisions (quick) and smartly. As humans, we can each decide how we feel about using cockroaches in this kind of research.
A. These computers are smart! B. They are also welcomed abroad. C. In this way, space travel will be much cheaper. D. With them, travelling across countries can be far quicker. E. But they may require changes in air traffic control system. F. These imaginary machines might not be too far from daily life. |
Humans are no stranger to taking on technological challenges. Hollywood movies have imagined a future of hoverboards(悬浮滑板) and flying cars. {#blank#}1{#/blank#} What's new and popular today? Let's take a look.
The Robotaxi
In a Robotaxi, no one drives, it drives by itself. You just tell where and it goes. It's like a magic ride, but a car! It watches the road with computers and cameras. {#blank#}2{#/blank#} They can reduce the number of cars on city streets by 60% and road accidents by 90%.
The Flying Cars
Flying cars include passenger drones(无人机) and helicopter hybrids(混动). {#blank#}3{#/blank#} Because the sky will never be as busy as the roads are. It may take you 30 minutes instead of 2 hours to go to a friend's house. Besides, it only costs around 60 dollars, and you get to fly. Isn't it cool?
The High-speed Trains
China is leading the world in high-speed trains. The latest type of trains can run at the top speed of 450 kilometers per hour. It has set a world record for the fastest train speed. The high-speed trains make the travel safer, greener and more comfortable. {#blank#}4{#/blank#} In recent years, these trains have been sold to 23 countries.
The Starship Rockets
SpaceX company's new rocket, Starship has completed its first flight. SpaceX engineers take this task as a great success. After a rocket finishes its job, it usually falls and breaks. But the Starship rockets don't break. By reusing the most expensive part of the rocket, it reduces the cost a lot. {#blank#}5{#/blank#}
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