题干

万德的同学上学通常都比乌鲁木齐的小朋友要早,这是由于(    )

A:地球自转造成两地时间的差异

B:万德小朋友比乌鲁木齐小朋友勤奋

C:地球公转造成两地季节差异

D:两地气候不同

上一题 下一题 0.0难度 选择题 更新时间:2019-06-15 04:38:05

答案(点此获取答案解析)

A

同类题2

信息归纳

    With the rapid development of science and technology, communication methods of people have changed a lot in the past years. As we all know, in ancient times, people communicated with people who were far from them only by letters, which took a very long time to get the message.

    In the 19th century, telegraph (电报) was invented, but it was not widely used, letter is still the main method at that time. In 1836, John Coker invented the first electromagnetic telegraph(电磁电报机) in the world, then telegraph came into being and was popular, which was much faster than letter, bringing great convenient to people.

    As time goes by, telephones become increasingly widely used. Now, the phone has been developed as mobile phone, fixed telephone, Internet telephone and other categories, being an essential communication tool in modern information society.

    In addition, network communication is popular as well. It is especially widely welcomed by the youths. A great number of people communicate with others on the Internet by using software, such as email, QQ, WeChat, bbs, MSN and so on. Using software is easy. A computer which is connected to the network is enough. In China, WeChat has become the most popular communication software nowadays. WeChat, known as Weixin in China, is a mobile phone text and voice messaging communication software which is developed by Tencent. People can make video calls that not only can hear the sound, but also can see the people you talk to.

Information Card

The method of communication in ancient time

____

The time when the telegraph was invented

____

The person who invented the electromagnetic telegraph

____

The software which has become the most popular in China

____

The number of the communication methods which are mentioned

____