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Video calling is a technology when you call somebody. You see him at the same time. It is a normal thing for us today. People did not know it one hundred years ago.

People first got the idea of video calling in the late 1890s. They did not know how to do it. The first success(成功) was in the 1930s. But the video was very bad. A US company made a Television-Phone in 1955. People saw each other when they called. The screen(屏幕) was 25 centimeters wide. The Internet changed video calling in the late 1990s. It was fast and the picture was good.

Many people use video calling every day. They work from home or they must stay at home. They are happy that they can see their family and friends on the screen.

1.People can _______ through video calling.

A see each other

B surf the Internet

C only hear each other

D send short messages

解析：选A。细节理解题。根据文章第一段Video calling is a technology when you call somebody. You see him at the same time. 以及第二段People saw each other when they called.可知，人们通过视频通话能够彼此看到对方，故选A。

2.When did people know how to use video calling?

A In the 1930s.

B In the 1950s.

C In the late 1890s.

D In the late 1990s.

解析：选A。细节理解题。根据文章第二段The first success(成功) was in the 1930s. 可知，视频通话第一次成功是在20世纪30年代，故选A。

3.Where was the first Television-Phone born?

A In France.

B In the UK.

C In America.

D In Germany.

解析：选C。细节理解题。根据文章第二段A US company made a Television-Phone in 1955. 可知，1955年，一家美国公司生产电视电话，故选C。

4.What can we learn from the passage?

A The Internet brings in video calling.

B Video calling helps people work better.

C Video calling has changed people’s travel.

D Now people can use video calling anytime.

解析：选B。推理判断题。根据文章最后一段They work from home or they must stay at home. They are happy that they can see their family and friends on the screen.可知，人们在家办公或者必须待在家里。他们很高兴能在屏幕上看到他们的家人和朋友。由此推断视频通话有助于他们更好的工作，故选B。