2016_2017
their nervous systems and ability to produce bab y birds, and can lead to kidney(肾) failures and death. So co ndors with h igh levels of lead are sent to Los Angeles Zoo, where they are treated with calcium EDTA, a chemical tha t removes lead from the blood over several days. Th is work is starting to pay o ff. The annual d eath rate for adult condors has dropped from 38% in 2000 to 5.4% in 2011.
A．any; any B．any; some C．some; some
( ) 18．It’s cold, so we decided _____ at home.
A．stay B．to stay C．staying
( )19．____ do you usually do _____ weekends ?
A．How ; at B．What; on C．What; in
( )20．How about ____ with us ?
A．go shopping B．goes shopping C．going shopping
( ) 21．— _____hours do you sleep every night ? —— Nine.
A．How often B．How many C．How much
( ) 22．My mother wants me to drink milk every day .She says it ____ health.
A．is good at B．is good for C．is bad for
( )23．____ she learns dancing, she doesn’t like it .
A．And B．But C．Although
( )24．This time Tom wants to do ____.He is going to the Great Wall.
A．different something B．something d ifferent C．something difference ( ) 25．— What do your parents do ? — They _____ doctors．
A．are all B．are both C．all are
( ) 26．Sam has ____ hair than Tim.
A．short B．shortter C．shorter
( ) 27．Tara is _____ smart ____ Tina.
A．so; as B．as; as C．as; than
( ) 28．Linda is good at _____.
A．sing B．singing C．to sing
( ) 29．Of all the students , Li Ming is_____ to Mr．Wang.
A．close B．closer C．the closest