简述胚胎生物技术在实验动物中的应用和步骤。

使用单词的正确形式填空。

1. Chen Mei studies as          ( careful)  as Li Bing.

2. Some young men use metal     _    (make) machines.

3. There are      _    (little) than fifty people in the meeting room.

4. Her eyes are much    __   ( beautiful) than her mother's.

5.           ( hundred) of children took part in the games.

6. The women are much    _      (thin) than they were last year.

7. It is     __   (interesting) TV play that I have ever seen.

8. Unit One is     __   (easy) of all the units.

9. The young man looks as _   _    ( strong) as a horse.

10. Jimmy felt too _       (excite) to say a word when he passed the test.

企业在选择目标市场时，采用（）模式可以分散风险，有利于企业发挥生产、技术潜能，而且可以树立产品品牌的形象。

A.产品/市场集中化

B.选择性专业化

C.市场专业化

D.产品专业化

（）：跳汰过程中脉动水流每完成上升下降一次周期性变化所用的时间。

下列哪项不符合G-6-PD缺乏症的实验室检查（）

A.高铁血红蛋白还原试验还原率下降

B.红细胞组织化学洗脱试验空影细胞大于30%

C.抗人球蛋白试验阳性

D.自溶试验轻度增加，并能被葡萄糖纠正

E.氰化物-抗坏血酸试验阳性

京剧传统戏服装有几种？