A/ an ____ is a person who is trained for traveling in a spacecraft
A.astronaut
B.scientist
C.technician
D.engineer

Human being have great ___________ on the rest of the world
A.attention
B.influence
C.attraction
D.focus

_________is a great source of energy but very dangerous.
A.Wind energy
B.Nuclear power
C.Water power
D.Solar energy

Choose the word that has the stress differently from that of the other words.
A.pollutant
B.condition
C.survival
D.animal

Choose the best answer to complete the blank in each of the followingsentencesOur office is equipped______ advanced technology.
A.on
B.about
C.with
D.in

He seldom goes to the library, ______?
A.isn't he
B.is he
C.does he
D.doesn't he

Uncle Ho, ________ all Vietnamese people have admiration, led a very simple life.
A.to whom
B.whom
C.who
D.for whom

We offer a very ____________ rate for parcels of under 2 kg.
A.competition
B.competitor
C.compete
D.competitive

_____________ gave me that picture book.
A.It was Mary whom
B.It was Mary
C.Mary
D.It was Mary whose

Dinosaurs became ____ millions of years go.
A.extinct
B.endangered
C.disappear
D.lost