It's a idea to build cabin hospitls（方舱医院） to receive patients during the outbreak of COVID﹣19（新冠肺炎）．（ ）
A．cheerfulB．classicalC．creativeD．curious
We have entered a world where robot operations become true with 5G technology．
Hard to believe! Scientists are full of which leads to great changes in our life．（ ）
A．attractionB．invention
C．positionD．contribution
Who is at the door？
A deliveryman（快递员） or wanting to sell his new products．（ ）
A．everybodyB．anybodyC．somebodyD．nobody
It's pity that many wild animals are now in danger．Please have pity on them since they are part of our big family．（ ）
A．a；/B．a；aC．/；aD．/；/
Through 5G，people in two different cities can even "shake hands" on the same screen．
_________（ ）
A．What a mess!B．Don't mention it．
C．With pleasure．D．Wonderful indeed．