单项选择题

A．Because every species becomes extinct.
B．Because humans beings are powerful enough to kill other species.
C．Because of over-population.
D．Because human being is still a young species though it is exptoiting the environment.
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单项选择题
A．Brett won’t try to get revenge.B．Brett won’t be angry anymore.C．Brett will not always be so busy.D．Brett will have forgotten the woman’s words.
A．Brett won’t try to get revenge.
B．Brett won’t be angry anymore.
C．Brett will not always be so busy.
D．Brett will have forgotten the woman’s words.
单项选择题
A．He plans to sell the books to a collector.B．The old books are worth a lot to collectors.C．He won’t sell the books until he has read them.D．The books probably aren’t worth much in terms of money.
A．He plans to sell the books to a collector.
B．The old books are worth a lot to collectors.
C．He won’t sell the books until he has read them.
D．The books probably aren’t worth much in terms of money.
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