
阅读下面的短文,根据短文内容,从下面方框内所给11个词中选择10个意义相符的词,必要时进行词形变化,填入空白处,每空一词。
because, slow, skill, it, up, fast, through, how, without, what, easy
Scientists have created a soft-bodied robot that’s powered by air. The robot doesn’t have a computer or a “brain”, and yet it can “walk” by ____1____. And if it is dropped into water, it swims.
____2____ is this possible? The secret is in the science of how air moves.
Have you ever noticed a “tube dancer” which is used to attract customers? If you have seen a tube dancer flopping around, you will understand it ____3____.
Tube dancers are tall, thin tubes of cloth through which air is pumped (用泵抽送). High pressure from the pumped air fills the tube, making it stand ____4____, and then the air flows through faster, making the pressure drop. When this drop in pressure forms a bend in the tube, it causes the tube to fall partway (中途) over. The bend makes the pumped air move more ____5____, raising the pressure again. The pumped air pushes the bend up until the dancer is pushed up once more.
Air pressure moving a bend along a tube is exactly what drives the robot. The magic happens ____6____ there are several tubes hooked (固定) up to the same pump. When the air starts to flow, the tubes move in different ways. But very quickly, all of these “legs” start to move in exactly the same way, making the robot walk. The robot’s speed is controlled by the air pressure.
The researchers built two robots. The first robot had four legs and the air was pumped to it ____7____ a hose (软管). Later, the team developed a lighter, two-legged robot that could carry its own battery-powered pump.
There are several remarkable things about the robot. The first is its speed. The robot can cover a distance as long as thirty of its body in a second. That would be like the world’s ____8____ man, Usain Bolt, running the 100-meter race in 1.71 seconds. The robot can also go over uneven (坑洼的) ground. If it bumps into a wall, it turns ____9____ help or control.
Because there is no brain, the new invention is really just a machine. So far, the robot has done all the things on its own. Now, scientists are exploring new ways to control the robot and perhaps will give it more ____10____ in the near future.
As time goes by, we believe such technology will play a positive role in achieving a more energy-efficient and eco-friendly future.
1.1.
A
B
C
D
解析:选itself。“by oneself”表示“独自地,靠自己”,这里指机器人能靠自己“行走”,所以用“itself”。
2.2.
A
B
C
D
解析:选How。根据后文“The secret is in the science of how air moves.”可知,这里是在问“这是如何可能的”,所以用“How”。
3.3.
A
B
C
D
解析:选easily。此处修饰动词“understand”,需要用副词形式。“easy”的副词是“easily”,表示“容易地”,这里指如果看过管舞者摆动,就会容易理解。
4.4.
A
B
C
D
解析:选up。“stand up”是固定短语,意为“站起来,竖立”,这里指空气的高压使管子竖立起来。
5.5.
A
B
C
D
解析:选slowly。根据“raising the pressure again”可知,弯折使被泵入的空气移动得更慢,从而再次提高压力。“slow”的副词是“slowly”,修饰动词“move”。
6.6.
A
B
C
D
解析:选because。“there are several tubes hooked up to the same pump”是“The magic happens”的原因,所以用“because”引导原因状语从句。
7.7.
A
B
C
D
解析:选through。“through”表示“通过”,这里指空气通过软管被泵入第一个机器人。
8.8.
A
B
C
D
解析:选fastest。根据“running the 100 - meter race in 1.71 seconds”可知,这里是在和世界上跑得最快的人博尔特作比较,所以用“fast”的最高级“fastest”。
9.9.
A
B
C
D
解析:选without。根据“Because there is no brain”可知,机器人没有大脑,所以撞到墙时,它不需要帮助或控制就能转弯,用“without”。
10.10.
A
B
C
D
解析:选skills。“skill”是可数名词,前面有“more”修饰,所以用复数形式“skills”,表示“技能”,这里指科学家可能会在不久的将来给它更多的技能。