Have you ever heard of learning disabilities (无力,无能),which are disorders in the ways that people understand or use a language? They can affect the ability to listen or think, or to speak, or to read and write. They can also affect the ability to do math.

A person with a learning disability has unusual difficulties in developing these skills. Researchers believe that learning disabilities are caused by differences in the way that the brain works with information. They say children with learning disabilities are not stupid or do not want to work. Their brains just deal with information differently from others.

As many as one out of every five people in the United States have some kind of learning disability.

A few signs of learning disability include not connecting letters with their sounds or not understanding what is read. A person with a learning disability may not be able to understand a funny story. They may not follow directions. They may not read numbers correctly or know how to start a task.

Experts say learning disability can’t be cured (治愈). But people who have them can be helped. Teachers and parents can help young people with learning disabilities to learn successfully.

1题为判断正误。(T代表正确,F代表错误)。2题完成句子。3题简略回答问题。4题找近义句。5题翻译划线句子。

1.Children with learning disability are stupid. (_______)

2.A person who has learning disability has special ________ in developing the ability of listening, reading, speaking, writing and doing math.

3.What causes the learning disability according to the researchers’ study?

________________________________________________________________________________________

4.One fifth of in America has some kind of learning disability.

________________________________________________________________________________________

5.________________________________________________________________________________________

Television is one of the greatest technological inventions of the twentieth century. A Scottish man called John Logie Baird invented it. Inventors in the USA and Europe were working on electronic television systems (系统) but Baird used a mechanical (机械的) system. In 1925, he was able to send the first black and white picture — of the head of a doll — from one end of his flat (公寓) to the other. He then used a local office boy, not the doll, and this teenager was the first person ever to appear on TV. Baird made the first television programmes for the BBC in 1929. These programmes had sound, not just pictures.

However, Baird’s system was very limited and basic. A totally electronic system was more popular and practical (实用的). The inventor of this electronic system was an American, Philo Farnsworth. In 1936, the BBC started using Farnsworth’s system because the picture was better than Baird’s.

Colour TV began in the USA in the 1940s but only a small number of people had colour televisions in their houses. They were very expensive. In Britain and the USA, the first regular (有规律的) colour TV programmes only began in 1967.

Now in the 21st century, we have digital (数字的) television. TV has changed a lot since the face of a boy appeared on TV in John Logie Baird’s flat!

1.Is television a great technological invention of the 20th century?(根据短文内容回答问题)

2.When did Baird make the first television programmes with sounds?(根据短文内容回答问题)

3.Who invented the totally electronic system? (根据短文内容回答问题)

4.从短文中找出与下列句子划线部分意思相近的短语或单词。

In 1936, the BBC started using Farnsworth’s system. _____________________

5.In this passage, the underlined(划线) word “they” refers to(指的是)____________

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