题目内容
（请给出正确答案）
A、Course paper
B、Journal papers
C、Dissertation
D、Proposal
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A、introduction
B、methods
C、Results ， Discussion
D、Conclusion
A、Background information
B、Current situation
C、Significance of the topic
D、Literature review
A、If we don’t recognize the serious problem of waste gas, our planet will be faced with disaster.
B、Failure to recognize the seriousness of waste gas will lead to a disaster for our planet
C、无
D、无
A、There are about five causes for the failure of the experiment
B、There are approximately five causes for the failure of the experiment.
C、无
D、无
A、In order to investigate the reason for the decrease of learning efficiency, a comparative study was conducted between the experimental group and the control group.
B、In order to look into the reason for the decrease of learning efficiency, we conducted a comparative study between the experimental group and the control group.
C、无
D、无
A、Such profound analysis which is based on theories is usually more authoritative and convincing than pure experiments.
B、Such theory-based profound analysis is usually more authoritative and convincing than pure experiments.
C、无
D、无
A、Cloud Intelligence, a new technology, has been introduced into China in recent years, offering its users much more convenience.
B、Cloud Intelligence is a new technology. It has been introduced into China in recent years. It can offer its users much more convenience.
C、无
D、无
A、vast amount of laboratory bonding studies on dental oxide ceramics.
B、Air-abrasion at a moderate pressure and using phosphate monomer containing primers and/or luting resins provide long-term durable bonding to glass-infiltrated alumina.
C、A little amount of laboratory bonding studies on dental oxide ceramics.
D、Air-abrasion at a moderate pressure and using phosphate monomer containing primers and/or luting resins do not provide long-term durable bonding to glass-infiltrated alumina.
A、Promising laboratory test results still need to be confirmed by clinical studies before clinical recommendation could be given.
B、It really is still a significant problem in dentistry to bond reliably to oxide ceramics such as alumina and zirconia ceramics.
C、Most original laboratory research reports on bonding to zirconia ceramics start in their introduction with a statement pointing more or less out that achieving a reliable and predictable bond to this ceramic would be a major problem in dentistry.
D、No clinical trials with alumina ceramic IRFDFs or with RBFDPs made from densely sintered alumina ceramic were found.
A、two
B、three
C、four
D、five
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