能够发光的物体叫做光源．太阳、月亮、烛焰、眼睛和钻石等物体中

搜题请搜索小程序“爱下问搜题”

问题填空题

能够发光的物体叫做光源．太阳、月亮、烛焰、眼睛和钻石等物体中属于光源的是______．

答案

光源是指能自己发光的物体，太阳、烛焰是光源，月亮、眼睛和钻石的光是反射的太阳的光，不是光源．

故答案为：太阳和烛焰．

填空题

用be动词的适当形式填空。

1.My sweater_________ on the bed.

2.—_________ your shorts blue?

—No, they _________.

3.—What color _________ his shoes?.

—They _________ black.

4.—How much _________ her yellow sweater?

—It _________ 20 dollars.

5.—How much _________ the red socks?

—They _________ 5 yuan.

6.—_________ the white shirt cheap?

—No, it _________.

填空题

下面程序的输出结果是【15】。
Private Sub Form_Click()
i=0
Do Until 0
i=i+1
if i＞10 then Exit Do
Loop
Print i
End Sub