可引起周围性面瘫的病变部位是（）
A.额叶
B.顶叶
C.基底节
D.桥脑
E.中脑
参考答案：D
写一个系数是﹣2，含有字母x，y的单项式（ ）．
For many years, the principle goal of computer (73) was to write short pieces of code that would execute quickly. The (74) needed to be small, because memory was expensive, and it needed to be fast, because processing power was also expensive.
A．users
B．programmers
C．computer
D．program
