单项选择题

People are surprised to learn that ______.

A．Negroes' achievements are not shown in history books.
B．Phillis Wheatley learned English.
C．Negroes are good at mathematics.
D．Negroes have a very long history in America.

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热门试题

单项选择题

From the passage we know that Negroes ______.

A．have no self-respect.
B．have no history.
C．need to have an interest in history.
D．need to learn what they have done for America.

单项选择题

The main task now facing ecologists, environmental activists and conservationists is ______.

A．to prevent pollution by legislation, economic incentives and persuasion
B．to arouse public awareness of the importance of environmental protection
C．to take radical measures to control environmental pollution
D．to improve the quality of life by enforcing environmental standards