【单选题】To those unused to the cash register, what does it look like?
A.
It looks like a telephone.
B.
It looks like the control panel of an aircraft.
C.
It looks like a typing machine.
D.
It looks like a radio.
【单选题】What should Mr. Porter do with the unused handbooks?
A.
Discard them in no time
B.
Keep them for the next workshop
【单选题】What can we do to avoid the waste of paper?
A.
Learn to make notepads from unused sides of paper.
B.
Cut down on paper consumption.
C.
Teach children not to litter.
D.
Stop using paper towels.
【简答题】禾本科植物的叶是由( )和( )两部分组成。
【简答题】What indicator should be used for the titration of 0.10 M KH 2 BO 3 with 0.10 M HCl?
【简答题】5 What is an unused book lying on a shelf compared with?