Oil, coal and natural gas are ______ fuels made from decayed material from animal or plants.
A.smokeless
B.unleaded
C.fossil
D.solid

Choose the word whose underlined part is pronounced differently.
A.because
B.reserve
C.research
D.present

Choose the word whose underlined part is pronounced differently.
A.broth
B.lots
C.other
D.cost

Choose the word whose underlined part is pronounced differently.
A.relative
B.solar
C.panel
D.another

Choose the word whose underlined part is pronounced differently.
A.potential
B.energy
C.demand
D.develop

Choose the word whose underlined part is pronounced differently.
A.advertise
B.wind
C.infinite
D.plentiful

Choose the word that has main stress placed differently from the others.
A.researcher
B.ceremony
C.expensive
D.alternative

Choose the word that has main stress placed differently from the others.
A.because
B.limit
C.machine
D.release

Choose the word that has main stress placed differently from the others.
A.restaurant
B.potential
C.environment
D.advantage

Choose the word that has main stress placed differently from the others.
A.amount
B.provide
C.lower
D.entire