高三英語Global warming教案
答案：
31.begging 32.it 33.however 34.when 35.hear 36.would 37.in 38.be taken
39.neither 40.what
31.begging，現在分詞作伴隨狀語。
32.it, 代詞，代替前文提到的聾啞人聚在一起乞討這回事。
33.however，表轉折，“然而，可是”。
34.when，考查be doing sth when.../be aboutto do sth.when….的結構，表“正在/即將 去做……突然/就在那時……”。
35.hear，and連接兩個動詞不定式to speak和(to)hear。
36.would，would you please/kindly do sth? 表客氣婉轉的請求。
37.in，介詞，in sigh language "用手勢語”，表方式：
38.be taken，由該句中的by可知，此處考查動詞的被動語態。
39.neither, neither…nor…是固定結構，表“既不……也不……；兩者都不……”
40.what，考查由what引導的主語從句。
3閱讀理解
閱讀下列短文，從每題所給的a、b、c和d項中，選出最佳選項，并在答題卡上將該項涂黑。
詞數：343 完成時間：6分鐘 難度：
these days, it's easy to fly across oceans for vacation. centuries ago, however, crossing the open seas required thorough and accurate planning, handmade boats, and courage. scientists and historians have long been looking for clues to explain who crossed which oceans first. when it comes to the trip between polynesia (玻利尼西亞中太平洋群島) and south america, chickens may have been among the first ocean voyagers, according to new evidence.
after studying an ancient chicken bone, anthropologists (人類學家) from the university of auckland in new zealand now say that people and chickens traveled from polynesia to what is now chile (智利) by about 620 years ago. by then, the inca people were already living in south america, but the polynesians would have been the first to get there by sea. previous theories claimed that european explorers and their chickens sailed to south america first -- but those voyagers didn't arrive until about a century later.
in , archaeologists dug up 50 chicken bones from a site in chile called el arenal. the team from new zealand analyzed one to these bones. according to their calculations, the bone is about 650 years old.
the researchers also compared the genetic material, or dna, from the south american chicken bone with dna from 11 chicken bones that had been found on the polynesian islands of tonga and american samoa. these islands are 6,000 miles west of chile. the bones found on the polynesian islands are been 600 and 2,000 years old.
results of the comparisons showed that the chicken bones from both the polynesian and south american sites had part of dna in common. the researchers found the same part of dna in feathers of two living chickens in chile that belong to a modem breed that lays blue eggs. that dna evidence suggests a close relationship among the chickens.