1. Frances Perkins， _________ of the United States cabinet， served in the cabinet as secretary of labor from 1933 to 1945.
A. the first female member
B. was the first female member
C. the first female member who
D. of whom the first female member
答案：A
分析：主語同位語結構。B中多了一個謂語was，因爲後面已經有一個謂語動詞served， 一個句子中出現2個謂語且沒有連接詞就一定錯; C中who多餘，用法也不正確;D中of whom多餘，不是定語從句，考的是同位語結構。
參考譯文：Frances Perkins，是美國內閣的第一爲女性成員，她從1933到1945年在內閣擔任勞工部祕書。
2. When _________ to dough and heated， carbon dioxide is released， causing the dough to rise.
A. is added baking powder
B. added baking powder is
C. is baking powder added
D. baking powder is added
答案：D
分析：When爲狀語從句引導詞;語序應該爲正常語序，A，C錯;B語序混亂，明顯應該用被動形式，而且有固定結構add to.
參考譯文：當把烘烤用粉加到麪糰里加熱的時候，會釋放出二氧化碳，使得麪糰漲開。
3. _________ the percentage of individuals with similar traits in succeeding generations， geneticists use the theory of probability.
A. The calculation of
B. To calculate
C. Is calculating
D. Calculated
答案：B
分析：to calculate，這裏用不定式表示“目的”，前半句的邏輯主語是geneticists，只有B符合要求;A中只有主語，句子不完整。
參考譯文：遺傳學家運用概率的理論來計算在後代中擁有相似特點個體佔有的百分比。
補充： 如同A的形式， 逗號前面就是一個名詞短語， 然而正確的句子裏， 名詞短語要麼作爲主語的同位語， 要麼本身是主語， 如11題。 否則就是脫離句子成分， 成爲錯誤。
4. Big- band uaaz relies on fixed arrangements， where_______than one instrument playing some of the parts， rather than on improvisation.
A. is more
B. whenever more
C. there is more
D. more
答案：C
分析：where引導狀語從句，後面缺主謂。
參考譯文：大型樂隊爵士依賴於固定的安排，其中演奏相同部分音樂的樂器超過一個，而不是現聲發揮。
5. Because of _________ diversity， seven separate groupings or divisions of algae have been established by botanists.
A. them
B. so that
C. those
D. their
答案：D
分析：those是泛指，這裏應該用their來特指seven separate groupings or divisions of algae.
參考譯文：因爲海藻們的不同特性，植物學家把他們分成7個不同的組別或分支。