Solar energy causes______.
A.less pollution than oil
B.more pollution than oil
C.the same pollution as oil
D.financial problem
A future computer scientist might also be ______.
A.a geologist B.a bioengineer
C.a politician D.a social worker
This text is mainly about______.
A.fights between parties for election
B.scandals of the politicians
C.policies of each party
D.how election is proceeded