数轴上到原点的距离等于4的点所表示的数是______．
与原点距离为4的点为：|4|，
∴这个数为±4．
阅读对话，回答问题。
Jenny: Tomorrow is Christmas.
Li Ming: Yes. What do you want to buy for your family?
Jenny: I want to buy some Christmas lights for our house. What about you?
Li Ming: I want to buy a new toy car for my brother.
Jenny: Great!
1. What does Jenny want to buy?
_________________________________________________
2. What does Li Ming want to buy?
患者，女，60岁。素有高血压病史，猝然昏厥，不省人事，两手握紧，牙关紧闭，右侧肢体偏瘫。拟用麝香开窍醒神，药量是（）。
A.0.03～0.1g
B.0.3～0.5g
C.1～3g
D.5～10g
E.15～30g
