单选题Not being able to sleep can be dangerous if we ______.A are feeling wellB worry about it too muchC repair our bodies by restingD plan our sleeping lives carefully
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单选题The whole region is rarely populated; our nearest neighbor lives ten miles away.A stolidly B smugly C sparsely D slimly
填空题Among the typically essential debts in our lives, the most costly one is credit card debt.____
问答题翻译：Here are our latest price sheet. You will see that our price is the most competitive.
单选题If the experiment succeeds or fails, it will provide us with valuable experience which is essential to improving our future work.A IfB provide usC experienceD improving
多选题In the design of a QoS solution， which two factors should be taken into consideration？（）AOn congested links， all forms of traffic will require some form of QoS.BAll traffic types and requirements should be examined to determine the number of traffic classes required.CIn the implementation of link efficiency mechanisms on links that typically transport relatively large packets， header compression will be most efficient.DIn the implementation of link efficiency mechanisms on links that typically transport relatively small packets， header compression will be most efficient.EIn the implementation of link efficiency mechanisms on links that typically transport relatively small packets， payload compression will be most efficient.FPayload compression provides more available bandwidth and reduces processing delay time.
单选题In order to attain our objective, it is essential that we will make the best use of the limited resources available.A attainB essentialC will makeD available
