Which of the following may NOT be the barriers to limit the growth of virtual worlds？
A. Inflation and unequal distributions of wealth can also happen in the virtual world.
B. The virtual world could grow complicated enough to force employment of special staff to manage it.
C. Parents would keep their children from the online games in order to keep them safe.
D. The online game companies will have to keep the virtual world safe, at some rather high cost.
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What is the main purpose of this text？
A. To introduce the status quo of religious freedom in Egypt.
B. To ask for help in alleviating the restricted religious freedom in Egypt.
C. To force the government into action of some changes.
D. To promote the idea that freedom of choice and citizenship shall be based on equal rights rather than membership of a privileged religion.
Which of the following statements is TRUE according to the text？
A. Bahai belief is a legitimate faith according to some Islamic officials.
B. Any attempt to leave Islam will be punishable by death, whatever the situation is.
C. Bahai belief is a religion that boasts a long history.
D. Islamic officials tend to employ strict interpretations of Islamic law when it comes to the issue of religious freedom.
Why do online games not mean "a hit with advertisers"？
A. The advertisers do not have appropriate ways to advertise in the online world.
B. Online game companies do not want to cooperate with the advertisers.
C. The profit pattern of online games does not leave much space for them.
D. The advertisers deem that online games will not be a rising industry.
What may "stealth tax" in "This sort of stealth tax seems to work" refer to？
A. Online world promotes transaction without seeing the currencies, thus boosting the consumption.
B. Things in the online world do not need to be taxed, and then is cheaper than actual ones.
Companies have already paid the tax for the players.
D. People buy things in the online world in a largely unnoticed way, either by himself or by others.
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