硬脑膜外血肿多由哪条血管破裂引起()
A.大脑中动脉
B.颞浅动脉
C.枕动脉
D.脑膜中动脉
E.海绵窦
参考答案:D
—May I _______ your dictionary?
—Sorry. Li Lei _______ it for five days.[ ]
A. lend; borrowed
B. borrow; has kept
C. borrow; has borrowed
D. lend; has lent
实验动物必须饲喂:()。
A、水果和饲料
B、一般的饲料
C、质量合格的全价饲料
D、特殊饲料