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Educating patients about receiving surgical procedures is becoming an important issue,______it can reduce anxiety and uncertainty while helping to hasten decisions for undergoing time sensitive surgeries.
A.therefore
B.as
C.if
D.however
B.as
C.if
D.however
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参考解析
解析：本题考查连词用法辨析。题目意为“让患者了解接受外科手术手续正在成为一个热点问题，____，它可以减少焦虑和不确定性，同时有助于加快患者作出有时效性的手术决定。” A选项“因此”，B选项“因为，像”，C选项“如果”，D选项“然而”。结合题意，空格后面具体阐释了让患者了解手术手续的好处，因此空格处应当填写表原因的连词，B选项正确。
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共用题干
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CSMA, although more efficient than ALOHA or slotted ALOHA, still has one glaring inefficiency. If the medium is busy, the station will wait for a random amount of time. When two frames collide, the medium remains （ ） for the duration of transmission of both damaged frames. The use of random delays reduces the probability of（ ）. For（ ）frames, compared to propagation time, the amount of wasted capacity can be considerable. This waste can be reduced if a station continues to listen to the medium while（请作答此空）.The maximum utilization depends on the length of the frame and on the（ ） time; the longer the frames or the shorter the propagation time，the higher the utilization.A.colliding
B.forwarding
C.transmitting
D.receiving
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Care providers also need to help patients to manage their feelings of uncertainty and______them of the benefits of modern medicine and technology which can substantially aid in health improvement。
A.assure
B.insure
C.sure
D.ensure
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pingB
traceC
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leave their patients with negative effectsB
can treat only human eye diseasesC
do little damage to their patientsD
make their patients need a long time to recover
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provide traffic patterns in congested areas，so that vessels can operate without having a separate lookoutC
provide inbound and outbound lanes to promote the safe flow of vessel trafficD
prohibit vessels carrying hazardous cargoes from entering waters that are environmentally sensitive
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单选题The professor’ s homework was to ask his students _____.A
to write about kindnessB
to be kind to strangersC
to spend time helping othersD
to go out to raise money
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