(一) 選擇正確的單詞填入句子并翻譯每個句子。
1. The number of _____species increases every year as natural habitats disappear.
A)dangerous B)serious C)endangered D)hazardous
答案：C
譯文：由于棲息場所遭到破壞，瀕臨滅亡的物種數(shù)量每年都在增長。
解析：dangerous危險的；serious嚴(yán)重的；endangered遭受危險的；hazardous災(zāi)難的。因此，選項C是正確的。
2. Outlines are used most often to ____the contents of long complex papers before the actual writing begins.
A)sketch B)illustrate C)draw D)describe
答案：A
譯文：提綱是在寫文章之前，對長篇繁雜的文章列出框架。
解析：Sketch大綱，概略；illustrate闡明；draw畫；describe描寫。因此，選項A是正確的。
3. We must ___the telegram arrives in time.
A)secure B)assure C)ensure D)certify
答案：C
譯文：我們必須確保電報及時到達。
解析：secure安全的；assure使確信；ensure確保；certify證明。因此，選項C是正確的。
4. During their first teacher training year, the students often visited local schools for the ___of lessons.
A)observation B)observance C)investigation D)inspection
答案：A
譯文：在第一年教學(xué)實習(xí)時，學(xué)生常常到當(dāng)?shù)貙W(xué)校去聽觀摩課。
解析：observation觀測；observance遵守；investigation調(diào)查；inspection檢查。因此選項A是正確的。
5. They were just going to give up the question, ___suddenly they found the answer
A)when B)after C)unless D)until
答案：A
譯文：他們正準(zhǔn)備放棄問題時，忽然想到了它的答案。
解析：此題需要一個時間狀語，when等于the momemt that正好符合題意，選項A便是正確的。
1. The number of _____species increases every year as natural habitats disappear.
A)dangerous B)serious C)endangered D)hazardous
答案：C
譯文：由于棲息場所遭到破壞，瀕臨滅亡的物種數(shù)量每年都在增長。
解析：dangerous危險的；serious嚴(yán)重的；endangered遭受危險的；hazardous災(zāi)難的。因此，選項C是正確的。
2. Outlines are used most often to ____the contents of long complex papers before the actual writing begins.
A)sketch B)illustrate C)draw D)describe
答案：A
譯文：提綱是在寫文章之前，對長篇繁雜的文章列出框架。
解析：Sketch大綱，概略；illustrate闡明；draw畫；describe描寫。因此，選項A是正確的。
3. We must ___the telegram arrives in time.
A)secure B)assure C)ensure D)certify
答案：C
譯文：我們必須確保電報及時到達。
解析：secure安全的；assure使確信；ensure確保；certify證明。因此，選項C是正確的。
4. During their first teacher training year, the students often visited local schools for the ___of lessons.
A)observation B)observance C)investigation D)inspection
答案：A
譯文：在第一年教學(xué)實習(xí)時，學(xué)生常常到當(dāng)?shù)貙W(xué)校去聽觀摩課。
解析：observation觀測；observance遵守；investigation調(diào)查；inspection檢查。因此選項A是正確的。
5. They were just going to give up the question, ___suddenly they found the answer
A)when B)after C)unless D)until
答案：A
譯文：他們正準(zhǔn)備放棄問題時，忽然想到了它的答案。
解析：此題需要一個時間狀語，when等于the momemt that正好符合題意，選項A便是正確的。