下列哪项不是细胞衰老的特征_刷题宝

题干

下列哪项不是细胞衰老的特征（）

A：细胞内水分减少

B：细胞代谢加快

C：细胞代谢缓慢

D：细胞内多种酶活性降低

上一题下一题 0.0难度选择题更新时间:2019-06-15 10:40:24

答案(点此获取答案解析）

B

同类题1

下面的图形是由三角形、平行四边形或梯形拼成的．请你用直线分割出这些基本图形，并画出它们的高．

同类题2

下列关于空气中各组成成分的说法正确的是（）

同类题3

下列地形区与地表特征连线正确的是（）

同类题4

My dear friend．
    I'm on vacation on an island(岛)in Greece．I arrived on Saturday morning．I stay in a hotel and it has a pool．The island is beautiful．It is hot and sunny here every day．
    Yesterday ,I went to the beach early in the morning．I took a long swim and then I sunbath(沐目光浴)．Next．I had lunch at a small restaurant near the beach．I met some boys from Romania at the restaurant．They were all very friendly．After lunch we played volleyball on the beach．
    This morning, I went to Delos．After that I went shopping and I bought you a nice gift．I'm sure you'll like it．
    See you when I get home．
    Love；
    Helen

Mr. James
Hook
1128 West
Fourth
Avenue
New York
NY10003
USA

根据材料内容选择最佳答案。

同类题5

在凸透镜的主光轴上放一根粗细均匀的木棒，a端在2倍焦距之外，b端在1倍焦距与2倍焦距之间，如图所示，那么木棒在光屏上的像是（）

小学学科试题库

初中学科试题库

高中学科试题库