[题目]-I am going to the post office.- you’re there, can you get me some stamps?AsWhileBecauseIf 题目和参考答案——青夏教育精英家教网—

题目内容

【题目】—I am going to the post office.

—_____ you’re there, can you get me some stamps?

While

Because

【答案】B

【解析】选项中C项引导原因状语从句；D项引导条件状语从句，均与题干提供的情景不符。A项强调主句谓语动词与从句谓语动词的同时性，而while除可表示同时性，还可以表示一个动作在另一个动作正在进行或持续过程中的某一时刻发生，这显然是题中从句所要强调的。故选B。

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Imagine looking at something and being able to move it just by using your brain!That is exactly what the new technology called BrainGate can do —with the help of a robotic arm,anyway.

BrainGate is the idea of Professor John Donoghue and his team of researchers at the Brown Institute for Brain Science,USA. BrainGate is attached directly to the brain. First of all,gold wires are put into the part of the brain that controls movement. These are then connected to a small computer chip(芯片) . When the person thinks about different movements,this creates electrical signals,which are picked up by the chip. After this,the signals that are created by the brain are sent back to a computer,which changes the signals into movements. Finally,the computer uses the robotic arm to carry out these movements. BrainGate can already be used to write an e-mail or play computer games,just by brain power.

The technology has already cost millions of dollars to develop and when it is available for use,it will probably cost thousands of dollars per person. There are still many challenges ahead for Donoghue and his team. They are currently planning a mini wireless version,which will allow people to be connected to the computer at all times. Donoghue also dreams of using this technology to help disabled people who can't move their arms or legs. He plans to connect BrainGate directly to their own paralysed limbs(瘫痪的胳膊或腿) .This will mean that the person can control their own body again,without relying on a robotic arm.

This research is attracting the military's (军方的) attention as well. However,it is easy to understand why scientists might be concerned about how thought-controlled machines could be used by the military.

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C. Brains D. Wires.

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