矿山开采管理和生态恢复工作由哪个部门管理？
参考答案：
国土资源局。
It was not until the subprime loan crisis（次贷危机） ____ great damage to the American financial system that Americans ____ the severity of the situation．
A．caused, realized
B．had caused, realized
C．caused, had realized
D．was causing, had realized
— ________. —OK, but I don't have a baseball. [ ]
A. Do you like baseball？
B. Let's play baseball.
C. Do you have a baseball?
D. Let's watch TV.
