In discussing oil pollution, one important fact to remember is that the problem remain
A.both/and
B.whether/or
C.neither/nor
D.because/so
A.both/and
B.whether/or
C.neither/nor
D.because/so
What are the man and the woman mainly discussing?
A.An alternative use of fuel oil.
B.A way to make fuel oil less polluting.
C.A new method for locating underground oil.
D.A new source of fuel oil.
After discussing the terms of the new health-benefits contract,()management and employees were satisfied.
A.both
B.also
C.either
D.too
What are speakers mainly discussing?()
A.The effect of the atmosphere on rainfall.
B.How conditions on Earth support life.
C.How water originated on Earth.
D.A new estimate of the age of Earth.
A.100 years ago
B.80 years ago
C.110 years ago
D.90 years ago
A.discussing
B.other
C.had called
D.he’d be late
A.Because some colleagues are on vacation.
B.Because the man has an appointment.
C.Because the woman is not available
D.Because the meeting room is occupie
D.
A.cy!=1
B.re!=0
C.po/fr>1/6
D.fr/po>1/6