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基因疗法是指将外源正常基因导入靶细胞，以纠正或补偿缺陷和异常基因引起的疾病，以达到治疗目的。 。A.
正确
B.
错误
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【简答题】完形填空。 Mrs Black lived in a city. She was very rich and never did 1 at home. In the evening she often watched TV and went to bed late at night. She always got up 2 lunch times. She never took any 3 , a...
【简答题】Jack is six years old. 1 the past summer holiday, he traveled to Australia. It was his first time to go traveling by air. He didn’t know how to find his seat, so he went to the hostess to ask 2 sh...
【简答题】Sally was four．She studied in a middle school．She liked dancing and singing and 1 a lot of time on them．But she hated math and even decided to 2 ．Her father was worried about it． It was Sunday. Sa...
【单选题】● 在 Excel 工作簿中，工作表（53） 。 （53）
A.
只能在所在工作簿内移动且不能复制
B.
只能在所在工作簿内复制且不能移动
C.
可以移动到其它工作簿内，不能复制到其它工作簿内
D.
可以移动到其它工作簿内，也可以复制到其它工作簿内
【单选题】在Excel工作簿中，工作表______。
A.
只能在所在工作簿内移动且不能复制
B.
只能在所在工作簿内复制且不能移动
C.
可以移动到其他工作簿内，不能复制到其他工作簿内
D.
可以移动到其他工作簿内，也可以复制到其他工作簿内
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