单项选择题 The panic of 1873 was caused largely by railroad over-expansion, leading to a slew of railroad bankruptcies and a(n) ______decline in new investment.

单项选择题 The lost boy was ______with fear and shook all over.

单项选择题 A move is ____ in Congress to oppose U.S. help.the wayB、 under wayC、 out of the wayD、 across the way