单选题
下面的短文后列出了7个句子，请根据短文的内容对每个句子做出判断：如果该句提供的是正确信息，请选择A；如果该句提供的是错误信息，请选择B；如果该句的信息文中没有提及，请选择C。

{{B}}Importance of Children's Oral Health{{/B}}
February is National Children's Dental (牙齿的) Health Month, but in children good oral (口部的) care is critical every day. The first comprehensive study on the nation's oral health, released recently by the Office of the U. S. Surgeon General, calls dental and oral diseases a "silent epidemic (流行的)", even in children. The report states that more than 51 million school hours are lost each year to dental-related illness. In fact, a recent study pointed to dental care as the most common unmet health need among American children.
To help counter this, the American Academy of Periodontology (牙周病学) (AAP) is launching an effort to educate children and parents about the prevention of dental diseases in children.
"This is important because oral problems can impact self-esteem for children and lead to problems of eating, speaking and attending to learning," said Michael McGuire, president of the AAP.
Common dental problems seen in children are cavities (龋洞) and gingivitis (龈炎),which are found in the majority of U. S. children. "When these problems are not caught early and treated, they can develop into more severe problems and cause unnecessary suffering," said McGuire. "However, much of the time, oral problems are avoidable problems."
In the Rio Grande Valley in Texas, a group of more than 120 dentists (牙医) volunteers to deliver dental care to thousands of low-income children each year with its Mobile Dental Unit that travels from school to school.
"According to the Surgeon General's Report, about 37 percent of children have not had a dental visit before starting school," said McGuire. When children don't see dentists, they miss the opportunity to have problems caught early before they develop into larger, more expensive problems to treat, and parents miss the opportunity to learn how to promote good oral habits in their children. "

单选题 Only in February should attention be paid to children's oral health.

【正确答案】 B

【答案解析】[解析] 关键词为February。依据此关键词找到相关语句，为文中第一段第一句：February is National Children's Dental Health month，but in children good oral care is critical every day．这句话的意思是：二月份为全国儿童牙齿健康月，但是儿童口腔护理每天都应该引起重视。由此可见，每天都应该关注儿童的口腔健康，故此题为“错误”的。

单选题 Dental and oral diseases are common in both adults and children.

【正确答案】 A

【答案解析】[解析] 关键词为common in both adults and children。依据此关键词找到相关语句，为文中第一段第二句： he first comprehensive study…calls dental and oral diseases a“silent epidemic”，even in children．这句话的意思是：……研究称牙齿和口腔疾病为静默性流行病，甚至是在儿童中。由此可见，该疾病在成人和儿童之间都很常见，故此题为“正确”的。

单选题 Boys miss more school hours each year due to dental-related illness.

【正确答案】 C

【答案解析】[解析] 关键词为Boys miss more school hours。依据此关键词找到相关语句，为第一段第三句：The reports states that more than 51 million school hours are lost each year to dental-related illness．这句话的意思是：报告指出，由于患牙齿相关的疾病，学生每年会缺课达5100多万课时。但是并没有对男孩和女孩进行比较，故此题为“未提及”的。

单选题 Oral problems in children can develop into more severe i problems. A. Right B. Wrong C, Not mentioned

【正确答案】 A

【答案解析】[解析] 关键词为develop into more severe problems。依据此关键词找到相关语句，为文中第四段第二句： When these problems are not caught early and treated，they can develop into more severe problems… 这句话的意思是：这些疾病如果没能及早发现并治疗的话，会发展成更严重的问题……由此可见，儿童的口腔疾病可能会发展成更加严重的疾病，故此题为“正确”的。

单选题 Oral problems can not be avoided in any way.

单选题 The law-income children are very grateful to the dentists.

【正确答案】 C

【答案解析】[解析] 关键词为low-income children。依据此关键词，可在文中倒数第二段找到相关语句：…a group of more than 120 dentists volunteers to deliver dental care to thousands Of low-income children each year…这句话的意思是：……一个由120多名牙医组成的志愿者小组每年去给几千个低收入家庭的孩子治疗牙病……文中并没有提到孩子们的反应．故此题为“未提及”的。