《2025年亮点给力提优课时作业本九年级英语下册译林版》

( )2.（2024·南京市鼓楼区一模）What can we know from the sign below?


A. The playground is open to the public.
B. The playground is used for riding bicycles.
C. Children can walk their dogs on that playground.
D. Children aged 11 can play games on that playground.

答案：  2. D 【解析】根据方框中“THIS PLAYGROUND IS ONLY SUITABLE FOR CHILDREN 12 YEARS OLD AND UNDER”可知，11岁的儿童可以在该游乐场玩耍。

“Bio - robots” are robots that look like animals. 1 They are helping researchers learn more about how animals live.
Bat（蝙蝠）robot
Bat flight is not simple. Muscles and bones fold（折叠）and unfold with every wing beat. 2 “If you want to make a flying robot,” said Science Focus, “don’t copy bats.”
But that’s what researchers did in the USA. 3 It has very thin “skin” made of silicone（硅酮）. Can it fly like a bat? Yes! B2 flaps its wings and does sharp dives and turns, just like a real bat!
Cockroach（蟑螂）robot
It has four legs instead of six, but this 4. 5 - centimetre - long cockroach robot can walk and climb walls just like real cockroaches.
The 1. 5 - gram robot was made for engines. The engine - maker wants tiny robots to look around inside airplane engines because humans can’t go there. 4 The robot uses electricity（电）to stick to walls. Engineers tested it inside a jet engine. It stuck on better than a real insect, according to Science Focus.
Guppy（孔雀鱼）robot
Some people think fish are dumb（笨的）, but there are still many things we can learn about them.
German researchers now use a robotic fish to better understand group behaviour in guppies. The team used magnets（磁铁）to move a 3D printed guppy around. 5 It copied the speed and direction of a fish partner, who thought the printed guppy was real.
A. B2 is a robot made to understand bat flight.
B. A magnetic robot rolled around under the fish tank.
C. They can fly like birds, swim like fish or move like bugs（虫子）.
D. Robot makers often look to nature for inspiration（灵感）.
E. To meet their needs, engineers thought about cockroaches’ sticky（有黏性的）feet.
F. The force made by their wings comes from a strong but flexible（灵活的）piece of skin.
G. They want the robot to look like an existing cockroach, act like one and be the right size.

答案： C@@F@@A@@E@@B