quEstions 23～25 ArE BAsED on thE Following nEws From thEBB
C、or thE voA、At thE EnD oF thE nEws itEm, you will BE givEn 15 sEConDs to AnswEr thE thrEE quEstions. now listEn to thE nEws.
rEsEArChErs sAy A smAll ponD oF AlgAE CoulD proDuCE Enough hyDrogEn gAs to mEEt thE ______ FuEl nEEDs For A DozEn or so CArs.A．wEEkly
B．monthly
C、yEArly
D．DAily