下列对图1的叙述，不正确的是_刷题宝

题干

下列对图1的叙述，不正确的是

A：采用差速离心法可将④和⑥进行分离，以研究它们各自的功能

B：若要获得图乙，需要对实验材料进行解离、漂洗和染色等处理

C：若图乙取材于洋葱根尖，细胞中一般不具有①、③、④结构

D：在有丝分裂实验中，图乙a、c所代表的时期光学显微镜下一般观察不到②③④⑤⑥

上一题下一题 0.0难度选择题更新时间:2020-02-16 02:16:43

答案(点此获取答案解析）

C

同类题1

Do you always understand the instructions on a bottle of medicine? Here's one for John. John is twelve years old. He had a bad cold and coughed(咳嗽) day and night. He went to see a doctor and was given some cough medicine. Please read the following instructions and if you can understand them.

Cough Medicine:
The medicine is for a person with a cough. Shake it well before use.
Take it three times each day before meals or before sleep.
Dose (药量):
Age: over 14     2 teaspoonfuls
8~13      1 teaspoonful
4~7       1/2 teaspoonful
Dot fit for children below the age of three or old persons with heart trouble. Put it in a cold place. Use it before December 1^st, 2004.

同类题2

—_______ do you read English books?

—Twice a day.

同类题3

完成下列各题

同类题4

小明用图1所示的电路来测量小灯泡的电功率（部分实验器材的规格已标明）．

同类题5

下列物质能够反应，且没有明显现象的是（　　）

小学学科试题库

初中学科试题库

高中学科试题库