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【简答题】
实验发现,将变形虫的细胞核取出,脱离了细胞质的核很快死亡;去掉核后的变形虫不能摄食、生长、分裂、细胞器逐渐退化、代谢逐渐减弱直至死亡,而在死亡前再植入细胞核,则其生命活动逐渐恢复正常。该实验表明( ) A. 细胞保持完整性才能进行物质交换和代谢活动 B. 细胞核控制着细胞的代谢,并受细胞质的影响 C. 细胞核是遗传信息库,是 DNA 储存与复制的场所 D. 细胞是多数生物体结构、代谢和遗传的基本单位
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举一反三
【单选题】What should we notice when we choose the date for the press conference?
A.
Avoid holidays
B.
Avoid local major social activities
C.
Avoid press conferences from other units
D.
Avoid collisions with the press's key propaganda report
E.
All of the above
【简答题】Find out the missing words from the dialogue in the Video Story.Every time we say the date, we are really saying it has been more than 2000 years since the _______of Christ.
【单选题】_____ the absence of the manager, we were unable to decide on the date of the celebration．
A.
In spite of
B.
On behalf of
C.
Due to
D.
Regardless of
【简答题】May be we can the date to Friday.
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