Two explosions near the finish line of the Boston Marathon killed at least 3 people and injured more than 180 others, and currently FBI has figured out how it __________.

完形填空（共20小题；每小题1。5分，满分30分）
阅读下面短文，掌握其大意，然后从36—55各题所给的四个选项（A、B、C和D）中，选出最佳选项，并在答题卡上将该项涂黑。
When I was a teenager, my dad did everything he could do to advise me against becoming a brewer (造酒人). He’d   36  his life brewing beer for local breweries only to make a living, 37   had his father and grandfather before him. He didn’t want me   38  near a vat (酿酒用的桶) of beer. So I did as he asked. I got good   39 , went to Harvard and in 1971 was accepted into a graduate program there that   40  me to study law and business at the same time.
In my second year of graduate school, I began to realize that I’d   41  done anything but go to school. So, at 24 I decided to drop out.   42 , my parents didn’t think this was a great idea. But I felt strongly that you can’t   43  till you’re 65 to do what you want in life.
I packed my stuff into a bus and headed for Colorado to become an instructor at Outward Bound. Three years later, I was ready to go back to   44 . I finished Harvard and got a highly-paid job at the Boston Consulting Group Still, after working there five years, I   45 ,  “Is this what I want to be doing when I’m 50?”  At that time, Americans spent good money on beer in   46   quality. Why not make good beer for   47 ? I thought.
I decided to give up my job to become   48 . When I told Dad, he was   49 , but in the end he   50  me. I called my beer Samuel Adams,   51  the brewer and patriot (爱国者) who helped to start the Boston Tea Party.   52  I sold the beer direct to beer drinkers to get  the   53  out. Six weeks later, at the Great American Beer Festival, Sam Adams Boston Lager (淡啤酒) won the top prize for American beer. In the end I was destined (注定) to be a brewer. My   54  to the young is simple: Life is very   55 , so don’t rush to make decisions. Life doesn’t let you plan.

根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

       What is a yawn（哈欠） and why do people yawn? A yawn is often associated with a person being tired．     People yawn for many reasons including stress, boredom, emotion and overwork．

      Have you noticed that yawning seems to be contagious （会传染的）? If one person yawns, this appears to cause another person to yawn．Researchers have found that 40-60% of people who see a picture of someone yawning will yawn themselves． 

      Some people think that yawning is rude and suggests that you are bored or uninterested．Maybe a yawn is a signal to a group that it’s time to go to sleep, or if someone yawns when they're bored, it may be a sign to change the topic of conversation．   Animals of all types yawn．If you have a dog or cat, you've probably seen your pet yawn several times．Even some birds yawn such as cockatiel parrots, Adelie penguins and Emperor penguins．

      Some of the scientific explanations of why we yawn claim it is caused by physical needs．One likely explana??tion is that the yawning reflex happens when our blood needs more oxygen．The deep breath helps supply the levels of oxygen in our blood．  It is also thought that the same chemicals in our brain that affect our moods and emotions cause us to yawn．

       Superstitions about yawning have been around for hundreds of years and can date back to the ancient Greeks．A common superstition says that a person must cover his or her mouth when yawning so that the soul does not escape through the mouth．   Today most people do not believe these superstitions and know that a yawn is a physical reflex．

       A．Did you yawn while reading this article?

       B．Yawning is not limited to humans．

       C．It will make you lose interest in your work．

       D．But this is not always the cause for a yawn．

       E．Even reading the word YAWN can make people yawn．

       F．However, it doesn't mean that you need rest or relax??ation．

       G．Other people believe that yawning is a sign that danger is near．

       H．Another common theory is that a yawn helps regulate our body temperature．

Near the table ______ a poor dog, which desired to satisfy his hunger with something ______ fell from the table.

完形填空(共20小題；每小題I. 5分，满分30分)
阅读下面短文，从短文后各题所给的四个选项(A、B、C和D)中，选出可以填入空内处的最佳选项，并在答题卡上将该项涂黑。
When Dunstan Cass left the cottage, Silas Marner was only a hundred meters away. He was walking home from the village, where he had   21 to buy what he needed  22   his next day’s work. His legs were tired, but he felt almost happy. He was looking forward to  23  ,when he would bring out his gold. Tonight he had an extra reason to hurry home. He was going to eat hot meat, which was  24   for him. And it would 25  him nothing, because someone had given him a piece of meat as a present. He left it  26  over the fire. The door key was needed to hold it safe in place, but Cass was not at all   27  about leaving his gold in the cottage with the door  28  . He could not imagine that a thief would  29   his way through the mist, rain and darkness to the little cottage by the quarry (釆石场).
When he reached his cottage and opened the door, he did not notice   30   anything was different. He  31    his wet coat, and pushed the meat  32   the fire.  33   he was warm again, he began to think about his gold. It seemed a long time to wait until after super, when he usually brought out coins to look at.  34    he decided to bring out his gold immediately, while the meat was still cooking.
But when he  35  the floorboards near the loom (织布机)，and saw the 36   hole ,he did not understand  37  . His heart beat violently as his trembling hands felt all round the hole. There was  38   ！ He put his hands to his head and tried to think. Had he put his gold in a different place, and forgotten about it? He 39   every corner of this small cottage, until he could not pretend to himself any more. He had to accept the truth 一 his gold had been   40  ！