The teacher gave some suggestions on what could come out for the examination.
A.effects
B.symptoms
C.hints
D.demonstrations

__________(41)
A.insists
B.wishes
C.requires
D.asks

__________(43)
A.a ratio
B.a measure
C.an average
D.a proportion

__________(44)
A.appear
B.refer
C.indicate
D.comprise

__________(46)
A.discard
B.vanish
C.evaporate
D.ease

__________(47)
A.linger
B.maintain
C.persist
D.remain

__________(48)
A.search
B.chase
C.lookout
D.survey

It was with a ________ heart that she said goodbye to all her classmates.
A.solemn
B.heavy
C.dismal
D.grim

________ after the World War II, the United Nations has been actively carrying out its convention to stop wars and bring peace to nations worldwide.
A.Established
B.Being found
C.To be established
D.Having been established

The foundation of all other branches of mathematics is arithmetic,_____science of calculating with numbers.
A.is the
B.the
C.which the
D.because the