（2015•广东佛山）

 A 13-year-old American has made a cheap machine that can help blind people read.

 The blind can read by using Braille – a system of small bumps (隆起物) that the blind touch to read the letters. The machine that makes these small bumps usually costs at least $2,000. It is called Braille writer. The American schoolboy, Shubham Banerjee, made a new Braille writer from a Lego tool that lets people create robots. Banerjee has called his new machine the Braigo – a combination (组合) of the words  Braille and Lego. It costs just $ 350. It works by changing electronic text into Braille and then printing it using a computer or mobile machine.

 Banerjee designed (设计) his Braigo last year for a school science exhibition. Since then, he has caught the interest of Silicon Valley in the USA. The big technology company Intel spent money on Banerjee's machine last November, but they did not say how much money they put in. Banerjee also got $35, 000 from his father to help him start the project. His father works as a computer engineer (工程师) at Intel.  He spoke about why he gave so much money to his son, saying:”We as parents started to be interested more, thinking that he's on to something and this invention has to continue.”Banerjee told the AP News: “My dream would probably be having most of the blind people…using my Braigo.”

两电荷量分别为q₁和q₂的点电荷固定在x轴上的O，M两点，两电荷连线上各点电势φ随x变化的关系如图所示，其中C为ND段电势最低的点，则下列说法正确的是（   ）

已知：

I．醛与醛能发生反应，原理如下：

+CH₃CHO $\underrightarrow{稀碱}$ $\underset{△}{\overset{-H_{2}O}{\to }}$ RCH=CHCHO

Ⅱ．烃A在标准状况下的密度为1.25g/L．

请回答：

根据意思写出相应的词语。

①比喻一个人说话前后抵触，不一致。____

②出乎人们意料之外。____