单项选择题

Questions 29 and 30 are based on the following news. At the end of the news item, you will be given 10 seconds to answer the questions.
Now, listen to the news.
Those logging contracts mentioned involve ______ hectares of forest in Congo.

A．15,000,000
B．50,000,000
C．1,500,000
D．5,000,000
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单项选择题
The Palestinian government needs ______ in aid this year.
A．$3,000,000
B．$1,300,000
C．$3,000,000,000
D．$1,300,000,000
单项选择题
Which of the following statements about lignin is CORRECT
A．It can be found in rags.
B．It can shorten the life expectancy of paper.
C．It is easy to separate lignin form wood pulp.
D．It is impossible to separate lignin from wood pulp.
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