单项选择题
A．exact reasons for migration are not known B．birds migrate because of changes in temperature C．the ancestral home of all birds was the tropics D．glaciers caused birds to migrate
A．the law is not of his interest B．the law is unfavorable to him C．the law is not in favor of him D．the law is not in his honor
A．Banks always lose money when they print customer's names on cheques. B．Banks never print the names of customers on cheques. C．It's easy to forge a signature on a cheque which prints a customer's name. D．It doesn't matter to a customer if the bank prints customer's names on cheques.