单项选择题

Prejudice and discrimination _______.

A．were gone
B．have been existing in the American society
C．don't exclude new immigrants from participation in the society
D．are mainly caused by the slavery

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单项选择题

According to the passage, which of the following is NOT true

A．Joblessness is an economic misfortune.
B．Joblessness is a psychological disaster for the unemployed and their families.
C．Joblessness can cause the unemployed to commit suicide.
D．Joblessness is a contagious disease.

单项选择题

The first games for the disabled were held ______after Sir Ludwing Guttmann arrived in England.

A．50 years
B．21 years
C．9 years
D．4 years