—Excuse me! You can't take photos here.Look at the sign. It says “NO PHOTOS”.
— Sorry,I _________ see it and I _______ do it.
A:didn't; won't
B:don't; won't
C:won't; won't
D:don't; don't
将下列十进制数改写成二进制数
(1)(106)10=____ 2
(2)(19)10=____ 2
(3)(987)10=____ 2
(4)(1993)10=____ 2.
买福利彩票中奖,是 ____事件(填必然、随机、不可能)
社会要建立彼此平等相待、真诚和谐的人际关系,必须( )
你认为,我们今天的教育,应该如何做到培养实验的精神?