单选题 Why did the lower-class white people in the United States treat Chinese immigrants with hostility?

A、 Because they didn’t understand their language.
B、 Because they saw them as a source of threat to their jobs.
C、 Because their culture was very different from theirs.
D、 Because they had very different appearances.

【正确答案】 B

【答案解析】[试题分析] 本题测试的是对句意的理解。
[详细解答] 答案在原文中也很明了：“They were faced with intense prejudice and discrimination，especially from lower-class white people，who saw them as a source of threat to their jobs.”。