（）闭塞时可出现淡漠、欣快等精神症状，大小便失禁、强握等原始反射。
参考答案：双侧大脑前动脉
分子内或分子间发生的遗传信息的重新共价组合过程是（）
A.DN修饰
B.DN复性
C.DN变性
D.DN重组
E.DN损伤
用所给单词的适当形式填空。
1.—How is the ____ (weather ) in Chongqing?
—It ____ (rain) now.
2. Do you like ____ (wind) days?
3. Today is ____ (sun). Let's go shopping.
4. ___ it ____ (snow) in Moscow now?
5. My friend always ____ (study) hard at school.
