Because of this, it is still uncertain who invented TV.

e.g.:

1)It was my first chance to use that software to edit the video extracts. I was uncertain about how to add background music to it.

2)Don't take his words seriously. He is a person of uncertain temper.

3)The light is uncertain.(忽明忽暗)

2. Some consider digital TV to be superior to satellite TV ...

consider:1).to think of someone or something as or to believe someone or something to be

2).consider to carefully think about

e.g.:

1)Who do you consider to be the most important person in history.

2)They are considering moving to another city since they get a new job there.

3)Her success is not surprising if you consider her excellent training.

4)Bell is considered to have invented the first telephone.

be superior to：比...好,比....地位高的;高傲的;自大的

E.g.:

1)In my opinion, trousers made by hand are superior to those made by machines.

2)Of the two books, I think this one is superior to that.

3)This western restaurant is superior to the one we went to last week.

superior n. 上级/长者

e.g.:

We will need a letter of recommendation from one of your superiors.

be inferior to 比...差的,劣的;地位低的

e.g.: A captain is inferior to a major.

3.consumers in the USA had access to 200 channel.

access: the possibility of reaching a place or the right to

use something

e.g.:

1)The only access to the old castle is a bridge.

2)Students have free access to the library in our school.

3)Only a few people have access to the lecture hall to deliver a speech.

4.In 1996, a completely new concept was introduced when the first WebTV set-top boxes came onto the market

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