A:有理数
B:无理数
C:正数
D:负数
如图甲所示,为某同学测绘额定电压为2.5V的小灯泡的I﹣U特性曲线的实验电路图.
They were shocked at the____(令人恐惧的) news that they had cheated so much money.
读课文《珠宝》,“我……我还有别的珠宝……都是从……同一个人那儿继承来的。您都愿意收买吗?”句中连用三个省略号,有何作用?