—She often has some bread and milk.
A：for
B：to
C：at
D：as
下列各式中不能用平方差公式计算的是（ ）
_________ only 20 minutes to go before the train left, I felt uneasy in the taxi to the railway station.
This coastal area a national wildlife reserve last year．( )
慈禧太后向列强保证：“量中华之物力，结与国之欢心”，充分暴露了清政府的腐败无能。此事发生的历史背景是（ ）
