单项选择题

A．A beginner doesn"t need any equipment but a wet suit.
B．Wearing a helmet can protect your head from getting hurt when you fall out of the canoe.
C．Canoes above 500 pounds are strongly recommended and they are a must for beginners.
D．The prices of canoes vary according to the brands and the different grades.
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单项选择题
A．The colloquial Arabic spoken in different Arabic countries differs as widely between Arab countries as do Italian, Spanish and Portuguese.B．Arabs speak and write in exactly the same language.C．The differences of grammar and vocabulary between artificial pan-Arabic and the living colloquial language is far less than the written and spoken EnglishD．An Egyptian will usually speak in Pan-Arabic to his family and other Egyptians.
A．The colloquial Arabic spoken in different Arabic countries differs as widely between Arab countries as do Italian, Spanish and Portuguese.
B．Arabs speak and write in exactly the same language.
C．The differences of grammar and vocabulary between artificial pan-Arabic and the living colloquial language is far less than the written and spoken English
D．An Egyptian will usually speak in Pan-Arabic to his family and other Egyptians.
单项选择题
Which of the following is true about leapfrog technology
A．Developing countries do not necessarily follow the same technology path as developed nations.
B．Leapfrog technology can not spread very fast because they face competition from the earlier systems.
C．India has developed from the agriculture economy to a high-tech service economy.
D．New versions of Microsoft Windows is always superior to the old version.
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