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【单选题】
为了提高雌性乳牛出生的比例,可在体外将携带X染色体和Y染色体的精子分开,进行人工受精。最好的分离方法是( )。A.
流式细胞分选术
B.
离心技术
C.
细胞电泳
D.
层析
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举一反三
【单选题】经审理，一审法院判决被告王某支付原告刘某欠款本息共计22万元，王某不服提起上诉。二审中，双方当事人达成和解协议，约定：王某在3个月内向刘某分期偿付20万元，刘某放弃利息请求。案件经王某申请撤回上诉而终结。约定的期限届满后，王某只支付了15万元。刘某欲寻求法律救济。下列哪一说法是正确的？
A.
只能向一审法院重新起诉
B.
只能向一审法院申请执行一审判决
C.
可向一审法院申请执行和解协议
D.
可向二审法院提出上诉
【简答题】阅读理解。 It's seven thirty now. It's time to go to school. Our classroom is behind the trees.It's very nice. There is a map of China on the wall. Twenty boys and fif girls are in the classroom. There...
【简答题】Our school is a v_____________ school .
【简答题】根据首字母或中文提示填空,注意填完整的单词。 1. A large v______ is a must if you want to learn a language well. 2. Both English and French are o______ languages of Canada. 3. Overwork, little rest and poor food all c______...
【单选题】在WindowsServer2003中，默认情况下____组用户拥有访问和完全控制终端服务器的权限。
A.
Interactive
B.
Network
C.
Everyone
D.
System
【单选题】— ______ is it from our school to the Bell Tower? — About half an hour's bus ride. Shall we go and visit it? [ ]
A.
How long
B.
How often
C.
How far
D.
How much
【简答题】短文填空。 Maria is a (1)r star in our school. She runs very fast and she eats a lot of (2)h food. For (3)b , she has bread and milk. She eats meat, (4)v and rice for lunch. For supper, she likes meat, ric...
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