20．I don't know what it is．No matter（51）whenI go to a post office and no matter where the post office is，I always find myself（52）standing（stand） in line behind someone who has a lot of business to do．
One day，I had to buy a couple of st amps，but I had to wait behind an old lady who took fifteen minutes（53）to finish（finish） a form that a child could do in one minute．Feeling（54）thatI could not stand waiting in such a line any longer，I decided to join（55）anotherone．It seemed twice as（56）longas the first line，but at least it was moving．It turned out to be the worst choice I had ever made．As soon as I lost my place in the first line，the one I joined slowed to a stop．I had no choice（57）butto wait behind a schoolboy（58）whowas taking half an hour to choose a new set of postcards．At last it was my turn．I nearly jumped for joy．Then the clerk behind（59）thecounter，a middle-aged fat guy，stood up，pushed forward a printed sign saying"Position Closed"and（60）said（say） without a smile，"Sorry，going to lunch．"

分析 每次我去郵局，總是排在隊(duì)伍的后邊．買郵票時(shí)由于前面的老婦人太慢，我換了另?xiàng)l隊(duì)，好不容易排到我時(shí)卻到了午餐時(shí)間．

解答 1．when 考查連詞．No matter when的意思是"無(wú)論何時(shí)"，故填when．
2．standing 考查非謂語(yǔ)．find是及物動(dòng)詞，其后要跟賓語(yǔ)myself，stand的邏輯主語(yǔ)是我，兩者之間是主謂關(guān)系，所以用現(xiàn)在分詞standing在句中做賓語(yǔ)補(bǔ)足語(yǔ)．
3．to finish考查不定式．在英語(yǔ)中，it takes/took sb．+時(shí)間+to do sth．，故填to finish．
4．that 考查賓語(yǔ)從句．后文句子是feel的賓語(yǔ)從句，從句中是個(gè)主謂結(jié)構(gòu)的句子，所以用that來(lái)引導(dǎo)．．
5．a(chǎn)nother 考查代詞． 在英語(yǔ)中，another泛指另一個(gè)．根據(jù)句意我決定加入到另一個(gè)隊(duì)伍，所以答案填another．
6．long 考查固定結(jié)構(gòu)．在英語(yǔ)中，as long as是固定搭配，意思是：和…一樣長(zhǎng)．
7．but 考查固定結(jié)構(gòu)．在英語(yǔ)中，have no choice but to do sth．是固定搭配，意思是"除了…別無(wú)選擇"．
 8．who 考查定語(yǔ)從句． 本句中的先行詞是schoolboy在定語(yǔ)從句中做主語(yǔ)，所以關(guān)系代詞用who來(lái)引導(dǎo)．
9．the 考查冠詞．在本句中，由于counter是名詞，需要一個(gè)限定詞修飾，故填the，這里是特指．
10．said 考查時(shí)態(tài)和語(yǔ)態(tài)．分析句子，可知此處要用一個(gè)謂語(yǔ)動(dòng)詞．由于前面的動(dòng)作都是表示過(guò)去，故用一般過(guò)去時(shí)，填said．

點(diǎn)評(píng) 語(yǔ)法填空是通過(guò)語(yǔ)篇在語(yǔ)境中考查語(yǔ)法知識(shí)的運(yùn)用能力，在解題前應(yīng)快速瀏覽短文掌握大意，在讀懂短文的基礎(chǔ)上，結(jié)合短文提供的特定的語(yǔ)言環(huán)境去逐句分析．要解決好語(yǔ)法填空，離不開堅(jiān)實(shí)的語(yǔ)法知識(shí)，有了堅(jiān)實(shí)的語(yǔ)法知識(shí)才能對(duì)語(yǔ)言進(jìn)行正確的分析和判斷，從而答對(duì)題目．

練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目：高中英語(yǔ) 來(lái)源： 題型：閱讀理解

8．Do you want to travel to the New England Aquarium（水族館）and experience it？If you are an Aquarium super fan，I believe you must be interested in some information below．
Animal encounter Programs
Dive into the water with a seal．Stand on top of the four storey Giant Ocean Tank to feed the animals．Go behind the scenes of your favorite exhibits．Whether you have an unquenchable（無(wú)法遏制的）curiosity about oceanic animals or you want a brand new observation on popular exhibits，fascinating Animal Encounter programs are designed for the Aquarium super fans．Call Central Reservations at 617-973-5206to book your program．
Daily Performances
Don't miss a day in the life of the New England Aquarium．Be sure to catch our daily events，which include penguin feedings，seal training sessions，dives in the Giant Ocean Tank and live animal performances．Our daily schedule will tell you when and where to watch your favorite program．All programs are included with admission．
Special Programs
Join us for family activities at the Aquarium，where we explore the blue planet most days through art，animals and other activities．We focus on one animal every month with Blue Discoveries Family Day，from octopuses（章魚）to whales．These activities are included with admission．For a fee，schools and other qualifying groups can also choose Explorer Classes for kids and special 3-D showings．
Virtual Tours and Videos
Before stepping foot in the Aquarium，explore some of our special exhibits and learn what to expect．Check out the Field Trip Orientation video before arriving with your group．The How to Be a Shark and Ray（鰩魚）Whisperer video gives special instructions on how to best experience our shark and ray touch tank．The Blue Impact virtual tour highlights some of our exhibits as it explains the impact of climate change on oceans around the world．

25．What does the passage tell us？C
A．Visitors can't see whales in the aquarium
B．The New England Aquarium has four storeys
C．Visitors can dive in the Giant Ocean Tank in the aquarium
D．Qualifying groups can choose Explorer Classes for adults in the aquarium
26．What do visitors have to pay extra money for？C
A．Penguin feedings
B．Seal training sessions
C．Special 3-D showings
D．The Blue Impact virtual tour
27．Why does the Aquarium set up Virtual Tours and Videos？A
A．To help visitors best experience the Aquarium
B．To draw attention to climate change on oceans
C．To sell video disks of the Aquarium to the visitors
D．To give instructions on how to protect oceanic animals．

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源： 題型：閱讀理解

11．Scientists from the United States say they have found fish and other creatures living under key waters in Antarctica．They made the announcement after completing three months of research at the Ross Ice Shelf-the world's largest floating ice sheet．
The researchers hoped to find clues to explain the force of the melting ice and its effect on sea level rise．Reed Scherer and Ross Powell are with Northern Illinois University in DeKalb，Illinois．They just finished up their research on our southernmost continent．Money for the project came from America's National Science Foundation．
"We chose a study site where，in the first year，we went into the subglacial（冰川下的）lake and tried to understand the environment there，both ecologically and in terms of the ice dynamics about how the lake operates，and how the sediment（沉淀物）underneath the ice sheet operates，as well，because it's the water and the sediment underneath the ice that control how fast the ice is flowing into the ocean．"says Ross Powell，who led the investigation．The team included scientists，engineers，machinery and other supplies across the ice from the main U．S．scientific base at McMurdo Station to the researcher's camp．The camp was near a subglacial lake，where an earlier study took place．
Ross Powell says the latest study may provide evidence that can help predict the effect of climate change on rising sea level．
"What we have found is that these are very sensitive areas to the stability of how dynamic the ice is and how fast the ice may react to increases of melting both from the ocean and the atmosphere．"
Among the new instruments built for the project was a powerful hot water drill．The researchers used the drill to dig down some 740 meters．They collected water，sediment and other material from the grounding zone．
Working around the clock before the deep hole refroze，they sent a video camera down to the 400-square-meter undersea area．
Reed Scherer says the video images they saw in the Command Center were a total surprise．
"It's a very mobile environment．The bottom is changing constantly．And so the things that we saw were all very mobile organisms，things that swim and some things that crawl．And obviously they are getting enough nutrition that they can thrive on．Some of the little crustacean-like creatures called amphipods that we saw swam quite quickly and were quite active．"
This is the farthest south where fish have ever been seen．How did the creatures get here？What do they feed on？And what effect will the retreating ice have on them？
Ross Powell says the ice and sediment cores taken from the grounding zone can offer clues．
"We know that the ice is melting there at the moment and so by opening up the cores once they get back，we hope to be able to understand what the ice was doing in the past，relative to what it is doing now．And because it is melting so fast or seems to be melting fast at the moment，we anticipate that there will be some differences that we'll see in the history of the ice sheet from the sediment cores，once we open them up．"But Ross Powell says the work raises more questions than it answers．
29．Scientists conducted the three-month research at the Ross Ice Shelf with the intention ofD．
A．predicting how climate change influences rising sea level
B．finding out whether there are life forms existing deep under Antarctic ice
C．proving the speed of ice flowing into the ocean is controlled by water
D．discovering an explanation of the effect the melting ice has on sea level rise
30．What made the researchers surprised when they saw the video images？A
A．Researchers saw fish in the farthest south for the first time．
B．A video camera was able to work well under deep icy waters．
C．Sediment cores present differences in the history of the ice sheet．
D．The drill should dig down 740 meters to collect things．
31．From sediment cores taken from the grounding zone，scientists will probably knowD．
A．what the ice will do in the near future
B．the ice in the grounding zone is melting at the moment
C．some differences rarely exist in the history of the ice sheet
D．something about the creatures under icy water in Antarctica
32．What can be inferred from the passage？A
A．Scientists will conduct a follow-up study on the frozen continent．
B．No creatures once appeared or lived in icy water in Antarctica．
C．America's National Science Foundation is in complete charge of the research．
D．Researchers have found how the sediment underneath the ice sheet operates．

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源： 題型：選擇題

8．-Can you explain _____China's football team failed again in the attempt for the World Cup？
-I am sorry，but this is the last time．We will behave ourselves．（　　）
A．why is it thatB．why it is thatC．how it is thatD．how is it that

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源： 題型：選擇題

15．It was ______ she failed in the game ______she felt upset yesterday．（　�。�
A．as； whichB．because； thatC．since； thatD．for；that

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源： 題型：填空題

5．Jack asked Mary how long she couldholdherbreath（屏息） underwater．

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源： 題型：填空題

12．Don't worry．Your memory will return gradually．

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源： 題型：選擇題

9．It is the knowledge from books as well as our life experiences __________us understand the world around us．（　�。�
A．which helpsB．which helpC．that helpD．that helps

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源： 題型：填空題

10．計(jì)劃plan．

查看答案和解析>>

同步練習(xí)冊(cè)答案