皮皮学，免费搜题
登录
搜题
【单选题】
以下关于实验的描述正确的是 [ ]A.
观察洋葱根尖分生区细胞的分裂发现染色体正向两极移动
B.
在高倍镜下可看到黑藻叶绿体的双层膜结构
C.
用纸层析法分离色素时，扩散速度与含量多少有关
D.
若细胞是无色透明的，用显微镜观察调节成较暗的视野
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【判断题】幼儿智育指幼儿园教育工作者根据幼儿教育目标和幼儿的认知发展特点，通过有目的、有计划、有组织的教育教学活动，使幼儿获得初浅的自然和社会方面的知识和技能，发展智力，培养幼儿的良好学习习惯，激发幼儿的求知兴趣的教育过程。()
A.
正确
B.
错误
【简答题】第1代电子计算机使用的电子元件是
【单选题】听力原文：How well do you speak Chinese? (A) She's feeling better. (B) I know only a few words. (C) We love Chinese food. (17)
A.
B.
【单选题】听力原文：W: How do you get to your office every day? Do you walk? M: Well, it's too far to walk. I usually take the bus since the bus stop is just at the corner near my house. Q: How does he usually get t...
A.
By bus.
B.
By taxi.
C.
On foot.
D.
By tain.
【单选题】听力原文：W: How do you get to your office every day? Do you walk? M: Well, it's too far to walk. I usually take the bus, since the bus stop is just at the comer by my house. Q: How does the man usually ge...
A.
By taxi.
B.
By bus.
C.
On foot.
D.
By train.
【简答题】听力原文：GRANT: How do visitors enter the competition on Open Day? CLARE: Well, firstly, they have to make their way to the 'portal photo booth' on campus. GRANT: Okay—a bit like a treasure hunt to start ...
相关题目：