That's very kind ______ you. I know it's very hard _______ you to do that.
| A．of, of | B．of, for | C．for, of | D．for, for |
When I knew that China had got her first Aircraft Carrier (航空母舰) , I felt excited and .
| A． proud | B．terrible | C．nervous | D．strange |
–Excuse me, haven’t you learned the new law? Everyone in a car must wear theseat belt.
-- Sorry, we won’t do that again.
| A．food | B．traffic | C．medicine | D．education |
Though they are far away from school, the children who live in mountains ______ go to school on foot.
| A．ever | B．always | C．never | D．hardly ever |
--Did you go to Kenli during the Peach Blossom Festival (桃花节)?
--Yes. The flowers were beautiful. Bees were flying them.
| A．in | B．among | C．between | D．through |
This is 3-D printer. And this is an artificial (人工的) ear. Can you believe that scientists printed this artificial ear by this 3-D printer?
| A．a | B．an | C．the | D．/ |