away？Is there a good sports game somewhere？What's life like in the deepest part of the sea？If you want to answer all these questions，just come to the Internet．Of course，people can also learn through reading or listening to the radio．But with the Internet they can learn better and more easily．A lot of information can be collected at a great speed．

Can we go shopping without leaving home？Can we see a doctor without going to the hospital？Can we study without going to school？Can we draw money without going to the bank？All these things seemed to be impossible，but now have become true．

　　The Internet helps us to open our eyes． The Internet also helps to open our minds．The Internet often gives us new ideas．In a word，it helps us in many ways．Great changes have taken place in our life since the use of the Internet．

21. What's the main idea of the second paragraph？ ______

A. We can learn only through reading or listening to the radio．

B. We can know everything through the Internet．

C. A lot of information can be collected at a great speed through the Internet．

D. We can become wise because of the Internet．

22. According to the third paragraph，we can do the following on the Internet EXCEPT ______ ．

A. go shopping without leaving home

B. see a doctor without going to the hospital

C. study without going to school

D. draw money without banks

23. The underlined sentence" The Internet also helps to open our minds．"means ______ ．

A. we cannot think without the Internet

B. something is wrong with our minds because of the Internet

C. our minds can't be opened unless we search the Internet

D. we can get some new ideas from the Internet

24. The passage mainly tells us ______ ．

A. the Internet helps us a lot in many ways

B. we don't need banks，schools or hospitals