1. Classification is an organizational pattern that groups items according to what they have in common.
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4. Tornado series of 1925
A 740 people killed in 5 states
B small violent storms
C the greatest potential for tornado damage
D $300,000,000 property damag
3. Rotating air masses of about 300 mph
A 740 people killed in 5 states
B small violent storms
C the greatest potential for tornado damage
D $300,000,000 property damage
5. Changsha is a beautiful city, as anyone can see.
A. 正确
B. 错误
4. Parents should prevent their children from watching violent TV programs because such programs are forceful and extreme.
A. 正确
B. 错误
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