智慧树慕课答案
1、单选题：
Lederman began _________ the chemistry lab after school and encountered Carl.
选项：
A: transferring
B: launching
C: hanging around
D: identifying
答案: 【 hanging around】点我阅读全文
1、单选题：
肉眼所能看见的光线称为（ ）
选项：
A: 有彩色
B: 无彩色
C: 可见光
D: 不可见光
答案: 【 可见光】点我阅读全文
1、单选题：
《晉靈公不君》一文中，身份為史官的人物是
选项：
A: 宣子
B: 提彌明
C: 靈輒
D: 董狐
答案: 【 董狐】点我阅读全文
1、单选题：
As for the history of cell biology, which of the following sequence is the most accurate?（ ）
选项：
A: Discovery of cells and establishment of cell theory; The cell structure was observed by light microscopy; The cell structure was observed by electron microscopy; Experimental cytology stage; Molecular biology stage.
B: Discovery of cells and establishment of cell theory; The cell structure was observed by light microscopy; The cell structure was observed by electron microscopy; Cell physiology stage，Molecular biology stage.
C: Discovery of cells and establishment of cell theory; The cell structure was observed by light microscopy; Experimental cytology stage; The cell structure was observed by electron microscopy; Molecular biology stage.
D: Discovery of cells and establishment of cell theory; The cell structure was observed by light microscopy; The cell structure was observed by electron microscopy; Gene theory stage; Molecular biology stage.
答案: 【 Discovery of cells and establishment of cell theory; The cell structure was observed by light microscopy; Experimental cytology stage; The cell structure was observed by electron microscopy; Molecular biology stage.】点我阅读全文
1、单选题：
设级数
，则级数
的和为（ ）。
选项：
A: -2e+6
B: 6-2e
C: 2e
D: 1
E: -1
F:
G:
H:
I: 6
J: 2e+6
K: 0
答案: 【 -2e+6;
6-2e】点我阅读全文
1、单选题：
如图所示，湖中有一小船，有人用绳绕过岸上一定高度处的定滑轮拉湖中的船向岸边运动。设该人以匀速率
收绳，绳不伸长，湖水静止，则小船的运动是
选项：
A: 匀加速运动
B: 匀减速运动
C: 变加速运动
D: 变减速运动
答案: 【 变加速运动】点我阅读全文
1、单选题：
1.“天下为公”是孙中山一生最负盛名的题词，这四个字出自（）
选项：
A: A.《论语》
B: B.《孟子》
C: C.《庄子》
D: D.《礼记》
答案: 【 D.《礼记》】点我阅读全文
1、单选题：
一瓶氦气和一瓶氮气分子数密度相同，分子平均平动动能相同，而且都处于平衡状态，则：
选项：
A: 温度相同、压强相同.
B: 温度、压强都不同.
C: 温度相同，氦气压强大于氮气压强.
D: 温度相同，氦气压强小于氮气压强.
答案: 【 温度相同、压强相同.】点我阅读全文
1、单选题：
考虑力对物体作用的运动效应和变形效应，力是 。
选项：
A: 滑动矢量
B: 自由矢量
C: 定位矢量
D:
答案: 【 定位矢量】点我阅读全文
