患者，男性，70岁，半年前外伤后，出现一下肢无力，查体出现如下图步态。

多见于什么（）

A.大脑损伤

B.脊髓损伤

C.胫神经损伤

D.小脑损伤

E.腓总神经损伤

(A) 条件(1)充分，但条件(2)不充分．
(B) 条件(2)充分，但条件(1)不充分．
(C) 条件(1)和(2)单独都不充分，但条件(1)和条件(2)联合起来充分．
(D) 条件(1)充分，条件(2)也充分．
(E) 条件(1)和条件(2)单独都不充分，条件(1)和条件(2)联合起来也不充分．

A university awarded grants in the amount of either $7, 000 or $10, 000 to some incoming freshmen. The total amount of all such awards was $2, 300, 000. Did the university award more $ 7,000 grants than $10,000 grants to its incoming freshmen
(1) A total of 275 freshmen received grants in one of the two amounts.
(2) The amount of money awarded in $10,000 grants was $200,000 more than the amount of money awarded in $7,000 grants.