双侧跟腱反射消失，脊髓病变在（）
A.腰1～2
B.骶1～2
C.腰1～2
D.骶4～5
E.胸11
参考答案：B
某境内投资者以外汇资金向境外投资1000万美元。根据外汇管理的有关规定,该投资者应向所在地外汇管理机构缴存的汇回利润保证金为()万美元。
A.10
B.25
C.30
D.50
If a person has not had enough sleep, his actions will give him ___ during the day.
A．away
B．up
C．in
D．back
