What does the author think of biofuels?
A、They keep America’s economy running healthily.
B、They prove to be a good alternative to petroleum.
C、They do not provide a sustainable energy supply.
D、They cause serious damage to the environment.
A、They keep America’s economy running healthily.
B、They prove to be a good alternative to petroleum.
C、They do not provide a sustainable energy supply.
D、They cause serious damage to the environment.
B.regulations should be made to guide the science of cloning humans onto the right track
C.the research on cloning humans should not be conducted so recklessly
D.Antinori is a great scientist who pushes reproductive biology to the limits
B.They may become nice people if they are willing to change their lifestyle
C.They are fine young men despite their loose jeans and multi-colored hair
D.They will respect you if you respect them
B.Working with colleagues at the office
C.Sleeping normal hours.
D.All the above
B.It prepares students to meet the future needs of society.
C.It encourages students to learn throughout their lives.
D.It ensures that students’ expectations are successfully fulfilleD.
B.It damages company-customer relations
C.It makes the company lose a lot of money
D.It protects honest ticket-paying passengers
A、Just let it go.
B、Mark it down and clarify it later.
C、Try to repair immediately on site.
D、Guess and put something else to replace it.
A、It wants to expand its storage of crude oil.
B、Its own oil reserves are quickly running out.
C、It wants to keep its own environment intact.
D、Its own oil production falls short of demand.
A、It proves profitable to both sides.
B、It improves economic efficiency.
C、It makes for economic prosperity.
D、It saves the cost of oil exploration.
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