阅读下列短文，从每题所给的四个选项(A、B、C、D)中，选出最佳选项。
A
Who says inventions are only made by grown-ups and professionals? Over the years, children have also succeeded in making their useful contributions to the world. Here are a few inventions that came to life from the minds of young children.
Hero Helmet
Seven-year-old Samuel Meyer's invention is aimed at stopping people from riding their bikes or skateboards without using a helmet. The Hero Helmet features an inbuilt remote that controls a lock on the wheels which unlocks when the Helmet is being worn by the rider. Samuel says: no helmet, no bike.
Robotic Earthworm
The first thought that comes to mind is, why a robotic earthworm? Well, ten-year-old David Cohen had some useful applications in mind. He believed it could be used to find victims after a flood, earthquake or fire. The robot could get into small and dangerous places where search dogs and humans could not go.
B. E. A. C. O. N.
Fifteen-year-old Hannah Herbst's invention, which stands for Bringing Electricity Access to Countries through Ocean Energy, was inspired by her pen pal who lives in Ethiopia and did not have access to lights. So she came up with B. E. A. C. O. N, which absorbs energy directly from ocean waves. Her invention won the “Discovery Education 3M Young Scientist Challenge” in 2015 and other numerous awards.
Portable Wheelchair Controller
At only eight years old, Amelia Fox created the invention to help lift people in and out of their wheelchair. This invention was not just born out of the desire to create something. Amelia developed this controller for her brother, who had just got hip surgery and needed the wheelchair to move around.
1. Who is the youngest inventor?
A. Samuel Meyer.
B. David Cohen.
C. Amelia Fox.
D. Hannah Herbst.
2. Which of the following can be used as a rescue tool?
A. Hero Helmet
B. B. E. A. C. O. N.
C. Robotic Earthworm.
D. Portable Wheelchair Controller.
3. Why did Amelia Fox create the invention?
A. To give her brother assistance.
B. To benefit the earthquake victims.
C. To generate electricity effectively.
D. To protect bike riders from injuries.
【答案】1. A 2. C 3. A
【解析】
【分析】这是一篇说明文。文章介绍了几项儿童的发明。
【1题详解】
细节理解题。由第二段中的“Seven-year-old Samuel Meyer's invention is aimed at stopping people from riding their bikes or skateboards without using a helmet.”（七岁的Samuel Meyer的发明旨在阻止人们不用头盔骑自行车或滑板。），第三段中的“Well, ten-year-old David Cohen had some useful applications in mind.”（嗯，十岁的David Cohen脑中有一些有用的应用。），第四段中的“Fifteen-year-old Hannah Herbst's invention, which stands for Bringing Electricity Access to Countries through Ocean Energy, was inspired by her pen pal who lives in Ethiopia and did not have access to lights.”（15岁的Hannah Herbst的发明代表着通过海洋能源将电力输送到各国，她的灵感来自她的笔友，她住在埃塞俄比亚，没有电灯。）和最后一段中的“At only eight years old, Amelia Fox created the invention to help lift people in and out of their wheelchair.”（年仅八岁的Amelia Fox发明了这项发明，帮助人们上下轮椅。），可知Samuel Meyer是最年轻的发明家。故选A项。
【2题详解】
细节理解题。由第三段中的“He believed it could be used to find victims after a flood, earthquake or fire. The robot could get into small and dangerous places where search dogs and humans could not go.”（他相信它可以用来寻找洪水、地震或火灾后的受害者。机器人可以进入搜救犬和人类无法进入的小而危险的地方。），可知Robotic Earthworm可以用作救援工具，去拯救受灾者。故选C项。
【3题详解】
推理判断题。由最后一段中的“This invention was not just born out of the desire to create something. Amelia developed this controller for her brother, who had just got hip surgery and needed the wheelchair to move around.”（这项发明不仅仅是出于创造的欲望。Amelia为她的弟弟开发了这个控制器，他刚刚做了髋关节手术，需要轮椅来走动。），可知是因为Amelia的弟弟做了髋关节手术，需要轮椅来走动，她想帮助弟弟，才发明了Portable Wheelchair Controller。故选A项。
