精选优质文档-倾情为你奉上八年级下Unit7 International charities单元测试一、单项填空 ( )1. How did you learn to cook this dish? I learnt it _. a video. I have learnt to cook many dishes _.watching videos.A. on; on B. by; for C. on; by D. for; by ( )2. Can you tell me what Tiangong 1 is? Tiangong 1 is used _.a space laboratory (实验室). It has worked well in space for over two years. A. by B. with C. as D. of( )3. Can you tell me something abou