单项选择题

A．how Texaco sold its chemical business
B．how Exxon, Texaco and Shell reported their earnings
C．how improved chemical operation deprived them of sluggish profits
D．how some major oil companies made money
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单项选择题
According to the passage. The Catastraphic event happened due to ____ .
A．a shortage of electricity power
B．bombing
C．misoperation
D．a technical fault
单项选择题
Why is a person’s social contacts one important factor in loneliness
A．We need our friends to share similar interests and activities.
B．We need our teachers to guide us.
C．We need co-workers to help us.
D．A lonely person’s popularity may be increased with more social contacts.
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