题目内容
听力原文：W: I enjoy going through second-hand bookstores, don't you？ It's interesting to see what people used to enjoy reading. Did you see this old book of children's stories？
M: Some of these books aren't so old though. See？ This Mystery was published only six years ago: It cost 75 cents. You can't beat that.
W: Hey, look at this!
M: What! Are you getting interested in 19th century poetry all of a sudden？
W: No. Look here. Someone gave this book as a present and wrote a note on the inside of the front cover. It's dated 1893. Maybe it's worth something.
M: Everything on that shelf is worth 50 cents.
W: But if this is the signature of someone who is well known, it might bring a lot more. I hear Shakespeare's signature is worth about a million dollars.
M: Oh？ I can hardly read what that one says. Who wrote it？
W: The name looks like "Harold Dobson." Maybe "Dobbins"？ Wasn't he a politician or something？ I'm going to buy this book and see if I can find a name like that in the library.
M: Good luck. Your poetry book may make you rich, but I'll bet my 75-cent Mystery is a good buy.
(23)
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A．achievingB．obtainingC．realizingD．earning
Women are more than twice as likely as men to suffer from depression.
Toothpaste is a substance【C1】______for the cleaning and polishing the surface of the teeth. Its primary function is【C2】______tooth decay. It is only as a by-product of cleaning teeth【C3】______toothpaste bas become a cosmetic.
Toothpaste【C4】______belongs to a group of dental hygiene products【C5】______as dentifrices. These【C6】______toothpaste, tooth powder, and various bacteria removing mouthwashes.
Historically, toothpaste is as【C7】______as the first toothache and human beings’first perception that teeth were【C8】______of their attractiveness to the opposite sex. Long【C9】______the invention of the toothbrush, ancient Greeks and Romans scrubbed their teeth with bits of cloth coated with the burnt heads of mice, moles and rabbits in the【C10】______that contact with these strong toothed animals【C11】______make human teeth firm. If these materials【C12】______revolting and dangerous, it is worth thinking【C13】______some other substances that have been used in toothpaste in the past 20 years. After the【C14】______of the toothbrush, it was common to【C15】______toothpaste containing chloroform(a flavoring【C16】______can cause cancer), and lead, which actually poisoned the toothpaste.
It was not【C17】______the late nineteenth century that teeth cleaning was【C18】______as a vital part of dental health. In 1896, Leon Williams argued that tooth decay was the【C19】______of acid and bacteria, and created the【C20】______"A clean tooth never decays". Although not strictly correct, he did create an environment ill: which dental prevention became the norm.
【C1】
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