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采用净现值（NPV）、内部收益率（IRR）和差额内部收益率（△IRR）进行互斥方案比选，它们的评价结论是：（）
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由于饮食不当，恣食生冷，损伤脾阳，致脾胃虚寒，不能腐熟水谷。饮食不化，停滞胃中，终至尽吐而出，可选用（）.
250km／h＞线路允许速度Vmax≥350km／h正线上，根据《高速铁路无砟轨道线路修理规则》规定，道岔静态几何尺寸容许偏差管理值中，轨距（岔区）的作业验收标准为（）mm。
Americans never tell others about their weight．请根据下面短文回答第下面的题目： Weight(体重)is one of the taboo subjects．In America，it is OK，or even good，to be thin but it is an embar-rassment(尴尬)to be overweight．In fact，the thinner you are，the more beautiful you are thought to be You’ll find that most models(模特)are nothing more than skin and bones．A woman who is thin is easy to become popular．Of course，there are lots of people do their best to be thin．They may use all kinds of ways such as doing exercise．0r dieting(节食)．But，sometimes，dieting may bring about some healthy problem5·Americans are very careful about their weight and most of the time they do not tell others how much they weigh…even if they are quite thin．Therefore，you’d better not ask about it. But if you really want to talk about this subject，it，s always safer to say，“0h，it looks like you have lost weight，”However，if you would like to be honest and polite．I suggest that you should choose your words carefully，perhaps by sayin9，“Hey，You look great. Very healthy looking．”And always remember，you can not use the word “fat”.Those thin women are more popular than those fat women．
第49题应选：根据以下内容回答下面的题目，Mr．Reece is an interesting old man．Mr．Reece worked 41 a farm．He and his wife 42 a lot of things and they had some cows．Every day they worked hard 43 morning till night．One day，Mr．Reeee44 his wife．“Let’s go to Portsmouth next Sunday．We Call have a good lunch there and then We call go to tile cinema" His wife was very 45 when she heard this，because they always ate a lot，and she didn’t like 46 three times It day．They went to Portsmouth 47 and walked about for an hour．Then， 48 it was twelve o’clock．they wanted to have lunch．They looked at four restaurants．In front of one restaurant，they saw a notice. It 49 ，“Lunch：12：30 to 2：30，1．5 pounds．”“Well，that’s great．”Mr．Reece said，“We call eat for two hours for 1．5 pounds here! This is the 50 for us．”第41题应选：
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