C. overseas Chinese feel disappointed at their life in Canada

D. people should think carefully before chasing the dreams abroad

27. What is the best title for the passage?

A. Improving Life Skills in Canada

B. Exploring Different Parts of Canada

C. Struggling for a Better Life in Canada

D. Going to Canada-Your Ideal Destination

C

　From the beginning of the Internet, online dating has become one of the most popular things to all the consumers (顾客)．Although this may be fun, it is important to remember to think of your safety when trying to meet that certain somebody. When talking about safety I am referring to taking care of your computer and yourself.

Before getting into the world of online dating you should make sure you take care of protecting your computer. A good fire wall and an antivirus program are a must. These are needed to protect your emails and anywhere you surf on the Internet. There are many great programs offered at your local computer store or available to buy online. With great programs often come some pretty good costs. There is something that is better for the people who just can't afford the cost of a good antivirus-you can find quite a few decent ones on the Internet for free.

Protecting yourself could surely be much more important than protecting your computer. You want to be careful in choosing your dating sites. Do some good research. If you know anyone who has tried an online dating service，ask them what they thought. There are so many online dating sites that you should do extensive (广泛的) researches. Make sure you keep the web addresses. Keep a list of fees, regulations and anything else that looks interesting to you. If a place looks shady or makes you feel uncomfortable then you should steer clear away. At the end of the day make sure you take care of yourself.

28. When you meet somebody online you should ．

A. try to know something about him or her

B. learn to protect yourself and your computer

C. remember that all of you are safe enough

D. realize that you are likely to be in trouble

29. The second paragraph is mainly to tell us that ．

A. it is necessary for you to protect your emails

B. good programs are usually very expensive

C. we can buy good programs at the local store

D. an antivirus is needed to protect the computer

30. Before you visit the dating sites ．

A. you should try to learn more about them

B. you'd better have a talk with your friends

C. you can look through the web addresses

D. you will collect as many sites as you can

31. The underlined word "shady" in Paragraph 3 means " "．

A. funny B. strange C. unsafe D. secret

D