人教版（新课标）高中英语必修一Unit 1 friendship 课时作业word版含答案（9份打包）.zip

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Unit 1 Friendship Using language课时作业
第一节 阅读理解
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Would you spit in a tube and spend D|S99 to find out whether you were related to a famous 18th­century revolutionary or an infamous 19th­century bank robber? That's the latest service provided by Ancestry.com. Ancestor Discoveries, which launches today, promises to provide its consumers with introductions to relatives from centuries past.
“It's the biggest leap forward for us yet, using nearly a million DNA profiles we already have in our system,” says Ancestry.com CEO Tim Sullivan, whose company is headquartered in Provo, Utah.
“As we see it, there are two markets for this sort of thing. One is the people who already love genealogy (家谱学), the other those who are simply saying, ‘Tell me who I am，’” says Sullivan. “For them, family history is never really done; they are eager to trace their family tree.”
Discovering new ancestors is made simple and inexpensive (D|S99). You just provide a small saliva (唾液) sample for the DNA test. Ancestor Discoveries' researchers will analyze and compare it with 65 million family trees and more than 800,000 Ancestry.com members. Results are available within six to eight weeks, including new possible ancestors, as well as details about their lives and connections to other living relatives.
However, many consumers remain fearful of hearing bad family medical history news. But Sullivan says, “There are positives, such as learning about things before they happen, much like what Angelina Jolie has been pushing.” The actress has had a series of surgeries after learning she was genetically likely to suffer from two types of cancer.
There's little doubt genealogy has shifted from being the pastime of few to a passion of many. There are four TV shows catering to the subject on PBS as well as TLC.
“The reason for the increase in interest over the years is partly due to the fact that so many research findings about genealogy and other such records are now instantly available