6．Number sense is not the ability to count．It is the ability to recognize a （1）change   in number．Human beings are born with this ability．（2）Surprisingly，experiments show that many animals are，too．For example，many birds have good number sense．If a nest has four eggs and you remove one，the bird will not （3）notice．However，if you remove two，the bird （4）generally leaves．This means that the bird knows the （5）difference   between two and three．
Another interesting experiment showed a bird's （6）amazing   number sense．A man was trying to take a photo of a crow （烏鴉） that had a nest in a tower，but the crow always left when she saw him coming．The bird did not （7）return   until the man left the tower．The man had an （8）idea．He took another man with him to the tower．One man left and the other stayed，but they did not（9）fool   the bird．The crow stayed away until the second man left，too．The experiment was （10）repeated   with three men and then with four men．But the crow did not return to the nest until all the men were （11）gone．It was not until five men went into the tower and only four left that they were （12）finally   able to fool the crow．
How good is a human's number sense？It's not very good．For example，babies about fourteen months old almost always notice if something is taken away from a（13）small   group．But when the number goes beyond three or four，the children are （14）often fooled．
It seems that number sense is something we have in common with many animals in this world，and that our human （15）ability   is not much better than a crow's．

1．A．riseB．patternC．changeD．trend
2．A．ImportantlyB．SurprisinglyC．DisappointedlyD．Fortunately
3．A．surviveB．careC．hatchD．notice
4．A．generallyB．sincerelyC．casuallyD．deliberately
5．A．distanceB．rangeC．differenceD．interval
6．A．a(chǎn)mazingB．a(chǎn)nnoyingC．satisfyingD．disturbing
7．A．relaxB．recoverC．reactD．return
8．A．a(chǎn)ppointmentB．excuseC．ideaD．explanation
9．A．foolB．hurtC．catchD．kill
10．A．reportedB．repeatedC．designedD．a(chǎn)pproved
11．A．confusedB．goneC．tiredD．drunk
12．A．graduallyB．luckilyC．strangelyD．finally
13．A．singleB．smallC．localD．new
14．A．seldomB．temporarilyC．merelyD．often
15．A．sightB．natureC．a(chǎn)bilityD．belief．

分析 本文是一篇說事理性的說明文，篇章模式為總-分-分-總的結(jié)構(gòu)．第一段提出話題，說明什么是數(shù)字感，并通過拿鳥類作為例子說明，不僅人類與生俱來都有這種數(shù)字感，而且動物也有；第二段運用一個人想對一只烏鴉進行拍照的另一個有趣的例子來進一步鳥類的神奇的數(shù)字的分辨力；第三段，以一個嬰兒為例說明人類的數(shù)字感并不是很好；最后一段為結(jié)論段，重申主題：人類和許多動物一樣都有數(shù)字感，而且人類的這種能力不比烏鴉好多少．

解答 1．C  考查動詞辨析．根據(jù)下文的"removeone/two"語義提示可知，這里是數(shù)字發(fā)生變化；由此可知本句含義為"數(shù)字感是分辨數(shù)字變化的能力"，C項符合語境，故選C．
2．B  考查副詞辨析．根據(jù)上下文的語境可知，分別說到"人類與生俱來具有這種能力（分辨數(shù)字變化的能力）"和"很多鳥類也有很好的數(shù)字感．"，運用邏輯推斷可知，這里表示這是"令人驚訝的是"．故選B．
3．D  考查動詞辨析．根據(jù)上文第一句的"recognize"和下文的"knowsthe   5"語義提示可知，這是這二個詞的同義詞復(fù)現(xiàn)，本句句義為：如果一個鳥窩里有四顆鳥蛋，你拿走一個，鳥兒就會發(fā)現(xiàn)．A"生存下來"，B"關(guān)心"，C"孵（蛋）"均不符合語境．故選D．
4．A  考查副詞辨析．根據(jù)常識判斷，這里要表達的意思是：如果取走兩顆鳥蛋時，鳥類在通常情況下會離開（飛走）．故選A．
5．C   考查名詞辨析．根據(jù)上文說到的"拿走一個和二個鳥蛋時，鳥的反應(yīng)和表現(xiàn)"的語義提示可知，這些都是屬于difference的范疇．而且這里的difference與第二句中的change形成同義詞復(fù)現(xiàn)的關(guān)系．本句句義為：這說明鳥類知道二和三的區(qū)別．故選C．
6．A   考查形容詞辨析．根據(jù)上下文的語義提示可知，這里要表達的意思是：另一個有意思的實驗也顯示了鳥類的這種令人驚奇的數(shù)字感．故答案為A．a(chǎn)mazing與第四句空格2"Surprisingly（令人吃驚或驚奇的是）"構(gòu)成同義詞的復(fù)現(xiàn)關(guān)系．
7．D   考查動詞辨析．根據(jù)下文第十一空前"notreturn to the nest"的語義提示可知答案，四個選項的含義分別為：A"放松"，B"恢復(fù)"，C"反應(yīng)"，D"返回，歸還"．本句句義為：這只鳥直到那個人離開那座塔之后才離開．事實上這里的return與上句中的left形成反義詞的復(fù)現(xiàn)關(guān)系．故選D．
8．C   考查名詞辨析．根據(jù)上下文的語境可知，這個人第一種方法行不通，所以這里再用另一方法，由此運用邏輯推斷可知，這里要表達的意思是：這個人有（或想出）了一個主意．根據(jù)語境，下文講了他的具體做法．A、B和D都不符合，C為正確答案，先有了想法或主意，然后是具體的行為．故選C．
9．C  考查動詞辨析．根據(jù)上下文的語境可知，他們只是在做實驗，根據(jù)常識并運用邏輯推斷可知，他們不是要抓（catch）烏鴉．其他三項A"愚弄"，B"傷害"，D"殺死"均不太符合語境．故選C．
10．B  考查動詞辨析．根據(jù)上下文的語義提示可知，本句講了實驗的進展，他們又先后用三個人和四個人重復(fù)做了實驗．并在下句交代了實驗的結(jié)果，但是烏鴉都是等到所有人（離開）后才回巢．故選B．
11．B   考查動詞辨析．根據(jù)語義提示可知，gone與上文（本段）的left，return，left，left多次構(gòu)成同義詞或反義詞的復(fù)現(xiàn)關(guān)系．句意為表示兩次實驗的結(jié)果：但是烏鴉都是等到所有人（離開）后才回巢．故選B．
12．D   考查副詞辨析．根據(jù)上下文語境并運用邏輯推斷可知，本句以強調(diào)句的形式交代了，最后的一次實驗及實驗結(jié)果，直到五個人進入到塔中，只有四個人離開時，他們才最終把烏鴉給搞糊涂了/愚弄了烏鴉．故選D．
13．B  考查形容詞辨析．根據(jù)本段語境并結(jié)合常識可知，前兩句在說：人類的數(shù)字感覺也不是非常好．再根據(jù)大語境，全文一直在講，對于鳥類在小數(shù)字變換時的數(shù)字分辨能力的實驗．顯然可以推出本句句義為：例如，當從一個很小的一組東西中拿走一些時，十四個月大的嬰兒幾乎總是能夠注意到（這個變化）．故選B．
14．D  考查副詞辨析．根據(jù)語義提示可知，這里的often與第三句中的almost形成近義詞復(fù)現(xiàn)關(guān)系．根據(jù)語境與行文邏輯，本句句義為：但是當數(shù)字超過三或者四時，嬰兒們通常會被搞糊涂．故選D．
15．C  考查名詞辨析．根據(jù)上文的語義提示可知，這里的ability與首段的ability形成相同詞的復(fù)現(xiàn)關(guān)系．文章末段與首段開甩語義照應(yīng)上的前后照應(yīng)的關(guān)系．根據(jù)語境，本句句義為：（好像數(shù)字感是我們與世界上的許多動物都具備的能力，而且）我們?nèi)祟惖倪@種能力不比烏鴉更強．故選C．

點評 解答此類題目可遵循以下步驟：第一步，通讀全文，了解文章大意，獲得整體印象，同時初選出一批較有把握的答案．第二步，邊核對初選答案邊補填留下的空格．如果短文難度較大，則可復(fù)讀幾遍，核對和確定答案．有些空一時決定不了，可作個記號，待復(fù)查時再確定． 第三步，復(fù)查定稿．從整體理解角度出發(fā)，仔細審核答案，確保意義上、語法上沒有錯誤，同時對遺留下來的少數(shù)幾個空格作最后選擇．

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Lisette Noonan heads the 80-year-old Pretoria Chinese School in South Africa's capital. The school serves about 500 students from kindergarten to grade 12. Every student studies Mandarin.

Ms Noonan says the school welcomes the new cooperation between South Africa and China. She said it is in the best interests of children to study Mandarin. She said that especially true with China becoming what she called “a huge economic power in the world”

1.We can learn from Paragraph 1 that .

A. South Africa introduces Mandarin into its school curriculum

B. South Africa has 11 official languages

C. "ni hao"is easy to say than other languages

D. students in school must speak all official languages

2.The underlined words “the new partnership” in Paragraph 4 refers to .

A. a recent agreement about trading cooperation B. five areas of cooperation in education

C. teaching official languages D. career education and research

3.From Paragraph 5,we can know that .

A. South Africans are familiar with Chinese music, movies and television

B. all South Africans aren’t interested in Chinese ideas and customs

C. the spread of Chinese ideas and customs is popular among South Africans

D. Chinese culture has a great influence on South Africans

4.Which statement is TRUE according to the passage?

A. Every school in South Africa will offer Mandarin to their students.

B. 60 percent of South Africans want to learn Mandarin.

C. It’s 80 years since Pretoria Chinese School in South Africa’s capital opened.

D. Mr.Noonan isn’t interested in the new cooperation between South Africa and China.

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