皮皮学，免费搜题
登录
搜题
【单选题】
下列对于细胞结构和功能的叙述,正确的是A.
没有内质网的细胞不能对蛋白质进行加工
B.
没有核糖体的细胞不能合成蛋白质,但可能合成细胞骨架
C.
没有细胞核的细胞不能进行细胞分裂和细胞分化
D.
没有叶绿体的根细胞经组织培养后,不能获得完整的绿色植株
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【单选题】听力原文：How about going to the ski resort this weekend? (A) That' s not a bad idea at all. (B) The sky is so beautiful today. (C) It takes almost 3 hours to get there. (15)
A.
B.
【单选题】I’d rather read than watch television;the programs seem all the time.A．to get worseB．to have got wo
A.
I’d rather read than watch television;the programs seem ____ all the time. A．to get worse
B.
to have got worse
C.
that it is getting worse
D.
to be getting worse
【单选题】- What TV programs are you watching these days? - Well, I’d rather read than watch TV. The programs seem ________ all the time.
A.
to get worse
B.
getting worse
C.
to be getting worse
D.
to have got worse
【简答题】科学家为了研究胰岛与糖尿病之间的关系，进行了如下实验：
实验一：切除狗的胰腺后，狗的尿液中出现了葡萄糖，并出现糖尿病的一些症状。
实验二：将正常狗的胰管结扎，一段时间后，现察到胰腺外部萎缩，只有内部的胰岛活着，狗的尿液中未检测到葡萄糖。
实验三：从狗的胰岛中提取出一种物质（被称为胰岛素），用该物质治疗患糖尿病的狗并获得成功。
请分析回答：实验一、二结果表明：（）在调节葡萄糖的吸收和利用过程中有重要...
【单选题】The primary duty of the snow ranger is______.
A.
to protect the ski area's operators
B.
to predict and control avalanches
C.
to forecast the weather
D.
to check skis and repair them
【简答题】S urrounding skin
【单选题】I’d rather read than watch TV; the programs seem ____ all the time.
A.
to get worse
B.
B to be getting worse
C.
to have got worse
D.
getting worse
相关题目：
参考解析：
知识点：
题目纠错 0
发布
