【判断题】道尔顿提出了原子学说,阿伏伽德罗提出了分子学说,而佩兰通过实验验证了爱因斯坦提出的布朗运动的理论。
【简答题】b____ n.1 a group of people 一群;一伙 2 a group of things that are fastened,held, or growing together 一束;一串
【单选题】What can we learn about the impact of the cell phone in India?
A.
The cell phone has broken down social classes.
B.
The cell phone has an impact on how some young adults are courting each other.
C.
The cell phone has been accepted by people of different ages.
D.
The cell phone is a reliable way to know youngsters’ future spouse.
【单选题】患者,女性,35岁。误食灭鼠药中毒,被送入急诊室,患者洗胃首选
【单选题】下列关于物质的构造说法错误的是
A.
道尔顿的原子论认为,物质世界最小的单位是原子,原子是单一独立且不可分割的
B.
阿伏伽德罗提出,构成气体的粒子不是原子,而是分子
C.
古希腊哲学家德谟克里特提出物质构成的最小单元叫“原子”,与现代的“原子”概念一样
D.
中国古代的墨家学派提出的“无厚”思想也认为物质一直分割到“无”,便不可再分下去了
【单选题】患者,女性,35岁。误食灭鼠药中毒,被送入急诊室,为患者洗胃首选
【单选题】Opinions vary the impact of social networking websites on reading
C.
what people tell about
【单选题】已知函数 f(n)= 1,n=0 n?f(n-1),n∈ N * ,则f(6)的值是( )