卵细胞浆内单精子显微注射是指（）。 A．用器械将精液或处理过的精子悬液注入宫颈管内、

__________of danger in the street at night, she had to go home, with a friend_________ her.

A．Warned, followed

B．Warning, following

C．Having warned, following

D．Having been warned, following

（二）

Nowadays, almost every family has TV set, and almost              76．_______

everyone likes watching TV. TV has become part of our lives.      77．_______

TV has many advantages, for example, it informs us the            78．_______

latest news which is happening in the world; it can open our      79．_______

eyes, enlarge our knowledge and also help us to see more          80．_______

about the world． But, it also has some disadvantages. People     81．______

waste too much time in watching TV and his normal life            82．_______

and work are affected． To the children who they spend too        83．_______

much time in watching TV, it can do harmful to their sight        84．_______

and healthy. So we should control the time of watching TV.        85．_______

细胞内的大空泡将核挤于一侧，形成“印戒样癌细胞”，见于

A．高分化鳞癌

B．低分化鳞癌

C．高分化腺癌

D．低分化腺癌

E．未分化癌

检验烧碱(NaOH)中是否混有纯碱(Na₂CO₃)，以下方法可行的是( )

A．加热后观察是否有气体产生　

B．溶于水后滴加稀氯化钙溶液观察是否有沉淀产生

C．溶于水后检验溶液是否显碱性　

D．溶于水后通入CO₂观察是否有NaHCO₃产生

金刚烷胺治疗帕金森病，日最大剂量不宜超过（）

A.150mg

B.200mg

C.300mg

D.100mg

E.50mg