1.in the United States voters election representatives to the national legislature , which consists of the House of Representatives and the Snate.
Election-〉elect(句子成分殘缺)
觀察主句，發(fā)現(xiàn)沒有謂語。Representatives因為有s，所以不是形容詞而是名詞。于是就出現(xiàn)了三個名詞voters election representatives無標點相連的情況。這種情況很罕見，我們因該對它很敏感。思考一下就知道中間的名詞變?yōu)閯釉~，即Election-〉elect

2.Her work in genetics won United States scientist Barbara McClintock ---- - in 1983.
(A) was the Nobel Prize
(B) the Nobel Prize was
(C) the Nobel Prize
(D) for the Nobel Prize
選c(雙賓語)
大家要注意雙賓語的考法。動詞后面直接接兩個名詞。而且看題干,已經(jīng)有一個謂語動詞,除非要填的部分中有從句引導詞,否則不可出現(xiàn)BE動詞,排除A.B.而D又明顯錯誤,因 為Nobel Prize為B.M的雙賓語。
參考譯文：美國科學家B.M.在基因方面的研究工作為她自己贏得了1983年的諾貝爾獎.
這題可以多讀兩遍，有助于大家培養(yǎng)正確的語感。另外大家要格外注意像give這類的詞�？梢哉fgive sth to sb,也可以說give sb sth

3.--- usually thought to end in northern New Mexico, the Rocky Mountains really extend southward to the frontier of Mexico.
(A) Despite
(B) To be
(C) While
(D) However
選c(連詞)
分析：A.despite 為介詞,后面要加名詞形式的東東,e.g.Despite usually being thought to end in ...而這里的thought 是過去分詞,不是動名詞,所以不對。
B.to be 是目的狀語，不能表達出轉折關系
C.while可表轉折關系的conj.
D.however 是轉折連詞，不能用于引導狀語從句。
參考譯文：洛基山脈通常被認為是延伸到新墨西哥州的北邊,但它實際上一直向南延伸到了墨西哥的邊界。

4.Complex spacecraft are characterized by a various of supporting systems,including communications,guidance and navigation,altitude control,and ,in some cases,life-support systems.
Various-〉variety(介詞前為名詞)
這種題屬于簡單體，在考試中分數(shù)不少，是一定要拿下來的�？吹胶竺嬗薪樵~，前面的詞一定要是名詞性質。在此單獨列出，希望大家在考場上對這個考點能有很強的條件反射。

5. During the Pleistocene glacial periods _____ portions of the Earth where plant and animal life flourished making it possible for people to subsist.
(A) the
(B) it was
(C) there were
(D) have there been
選c。分析句子成分后發(fā)現(xiàn)缺主謂。C顯然是正確的。D的倒裝很明顯錯。

6. Nebraska has floods in some years, _____.
(A) in others drought
(B) droughts are others
(C) while other droughts
(D) others in drought
選a(省略的用法) 。省略是托�？荚�的一個難點。做這部分題需要我們對句子結構和省略方式有很好地掌握此題，原句為：Nebraska has floods in some years, and Nebraska has drought in other years. 并列從句省略，然后時間狀語提前。
如果看不清省略方式，就抓住細節(jié)一樣能把題做出來�？吹絠n some years，肯定是in other years,省略year就是in others.因為后面缺主謂，省略的必定是主謂，句子結構一定要跟前面一致，最多就是有倒裝而已。實在不行就往回推，自己把主謂加在后面看看哪個最合理最像前面一句就是答案

7. While studying the (chemistry) of (human body) , Dr. Rosalyn Yalow won a Nobel Prize for the research she (conducted on) the (role) of hormones. （95/8 ）
選b(單數(shù)可數(shù)名詞不能裸體)。又是一個托福常考知識點：單數(shù)可數(shù)名詞不能裸體。此處借此之后跟名詞，但名詞要不就要由數(shù)詞介詞限定，要不就要是復數(shù)。這個考點出現(xiàn)幾率奇多，大家一定要非常清楚才行。

8. Some (insects) (hear) ultrasonic sounds (more than) two octaves (than higher) humans can.
選d(比較級語序) ，比較級是先出現(xiàn)比較再出現(xiàn)than。這類的題也曾經(jīng)出現(xiàn)過好幾次。不難，但要有個個印象。

9. _____ important development of the Neolithic age was not in the manufacture of stone tools but in the production of food.
(A) The most
(B) Most
(C) Most of
(D) Of the most
選a。was說明前面是單數(shù)。只能the most來說明它是最高級

10.The first Native Americans (to occupy) (what is) now the southwestern United States (were) the Big-Game Hunters, (which) appeared about 10,000 B.C.
Which->who(who,which的混用) 。這又是托福中時不時就會出現(xiàn)一次的考點。還是那句話，對考點的敏感決定你的速度和正確率。

11. {In} plane geometry,the sum of (the internal) angles of (any )triangle (has) always equal to 180 degrees.
d.has->is ，be equal to。

12.(On) steep hillsides, tree roots bind to (soil) that might (otherwise) be washed away (if) heavy rains.
if--->when ，if后面要跟完整句，d顯然錯了。而when則可以省略與前句重復的主語。

13.The lower ___ in a room, the more slowly our eyes focus.
(A) the level of lighting
(B) light level
(C) leveling of light
選a 。一道極經(jīng)典的題！這是一個the more,the more的考題，單考法狠刁。根據(jù)語感可以把題做對，下面我從語法上講一下這道題the more,the more本身是一個倒裝。如此句，正確的語序應該是if the level of lighting is lower in a room,our eyes focus more slowly，將lower和slowly提前。所以說，爭議選項b是不對的。還原之后來看，b中單數(shù)可數(shù)名詞level裸體了，所以不對

14.In geometry, an ellipse may be defined as the locus of all points ------ ----- distances from two fixed points is constant.
A) which as the sum of
B)of the sum which
C) whose sum of whose
D) whose sum that the
選a，有人認為那是選d。我個人認為，d從語法上講有點問題。后面的that做什么？distances又做什么？要是sum of the還說得過去但從語義上理解只能是a。我們知道，橢圓上的點到兩個焦點距離之和為定量，a就是表達的這個意思。如果是c(sum of),表達的意思是所有點到兩焦點距離之和為衡量，這顯然是不對的,a的表達方式不大合乎我們的習慣，請大家自己記一下。As后面表示此事物的性質

15. Although (based it on) feudal models, the colony of Pennsylvania (developed) a (reputation) for a (progressive political) and social outlook.
選a。這里我們討論一下d，這里progressive是修飾outlook的，和political and social作為整體并列，多個形容詞修飾同一個名詞形容詞間不需要逗號或and下面是rinehart關于這個問題的講解：political and social，是因為political、social之間是并列的一個名詞是可以同時被多個形容詞修飾的a tall intelligent young American professor不可能寫成a tall and intelligent and young and American professor 。