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问题 判断题

借口准备是对各地相关软件、外部系统采集的信息如何连接到住系统中。

答案

参考答案：对

选择题

用豌豆进行遗传实验时，下列操作错误的是：[     ]

A．自交时，雌蕊和雄蕊都无需除去

B．杂交时，需在开花前除去母本的雌蕊

C．杂交时，需在花蕾期人工去雄

D．人工授粉后，应套袋

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填空题
完成句子。
根据语境, 在所给单词或词组中选择予以适当的一个, 并用其正确形式填空.
get away with  settle down  looking forward to  ave a gift for  tell a lie    
account for   bring up     prevent  from     in memory of  block  out  
1. Father has worked in the south for five months.we are        his return.
2. A big performance was held        the people who died in the earthquake.
3. since you can not     coming late,you had better apologize to your teacher.
4. I don't like to make friends with a person who often              .
5. His illness             her absence.
6.a fter his parents died, john        by his elder sister and brother-in-law.
7. Nothing can        him        marrying her.
8. Black clouds        the sun light just now.
9. Back from abroad ,the young couple decided to        in Nanjing.
10. He          singing sounds. He has a golden voice.
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