问题详情：
Have you seen a picture of George Washington lately? Take a look at a dollar or check out a book on Washington from the library. You probably won’t find any pictures of him smiling.
Did the painter forget to tell the President to say “cheese”? Actually, Washington began losing his teeth at age 22 and was entirely toothless by age 64. Most of his pictures were painted while he wore dentures (假牙). His various sets of dentures were made from both animal and human teeth. These teeth were held together with springs(*簧) so powerful that George’s jaws (颚) had to work hard to keep the upper and lower parts together. If he relaxed, his mouth would open! This may be the reason why Washington always looks so stern in his pictures.
Washington lived in the 1700s, a time when people didn’t take care of their teeth the way we do today. They didn’t have toothpaste with fluoride (a chemical that prevents teeth from becoming bad). Most people used powdered chalk to clean their teeth. Some people had toothbrushes made of animal hairs with wood or metal handles.
Back then, people didn’t visit the dentist every six months for a checkup and cleaning. George’s dentist, John Greenwood, lived and worked in New York. Washington regularly mailed his dentures to Greenwood so they could be repaired. Otherwise, he would see his dentist only to have teeth taken out because they caused him pain. During the American Revolutionary War, General Washington’s teeth bothered him so much that he sent for the French dentist La Mayeur.
Today we don’t have to suffer like George did. So the next time someone takes your picture, show off your teeth and say cheese!
32. There are few pictures of Washington smiling because when his picture was painted _____.
A. he had to try to keep his false teeth in
B. the painter forgot to tell him to smile
C. he was unhappy to be a painter’s model
D. the painter didn’t draw his teeth
33. The underlined word “stern” in Paragraph 2 probably means _____.
A. happy B. puzzled C. serious D. confident
34. In Washington’s time, _____.
A. people were unwilling to clean their teeth
B. people used toothpaste to clean their teeth
C. there was no way to stop teeth becoming bad
D. there were toothbrushes made of animal hairs
35. What can we know about George Washington?
A. He said cheese when his picture was being taken.
B. He and his dentist lived in the same city.
C. He suffered a lot from losing teeth.
D. He got medical care only from Greenwood.
【回答】
ACDC
知识点：科普环保类阅读
题型：阅读理解
