How were immigrants viewed by U. S. Congress in early days? A．They were of inferior races. B．They were a source of political corruption. C．They were a threat to the nation' s security. D．They were part of the nation' s bloodstream.
A.They B. B．They C. C．They D. D．They E.
【参考答案】
A 细节题。第二段首句提到，我们不打算回到国会认为劣等民族会污染美国血统的日子。结合首段首句的immigrant......