What is a microscope used for( )
· Making very small things look much bigger.
· Making very big things look much smaller.
· Helping you read some newspapers.
· Helping you if you can’t see things clearly.
出自:运营管理

完成拼图验证

按住下方滑块,将拼图拖到缺口处后松开。

拼图背景,将小拼图拖到缺口处
向右拖动滑块