某男性患者，缺失，缺失，拟行可摘局部义齿修复，设计RPI卡环，采用三臂卡环，舌杆大连接体连接

义齿设计中使用近中支托和应力中断式卡环的主要目的

A:增加义齿的固位 B:增加义齿的强度 C:防止基牙龋坏 D:减轻牙槽嵴负担 E:减小基牙上的扭力

某男性患者，缺失，缺失，拟行可摘局部义齿修复，设计RPI卡环，采用三臂卡环，舌杆大连接体连接

舌杆截面的正确形态应为

A:半梨状 B:泪珠状 C:半圆状 D:圆形 E:扁形

某男性患者，缺失，缺失，拟行可摘局部义齿修复，设计RPI卡环，采用三臂卡环，舌杆大连接体连接

下列哪项不属于杆状卡环的变体

A:U形 B:W形 C:T形 D:I形 E:L形

某男性患者，缺失，缺失，拟行可摘局部义齿修复，设计RPI卡环，采用三臂卡环，舌杆大连接体连接

选择后牙人工牙时，应该考虑的因素除了

A:颊舌径 B:近远中径 C:牙尖高度 D:人工牙强度 E:颌间距离

下列哪项是毛氏第Ⅴ类错（）

A:个别牙错 B:开 C:前牙反 D:后牙锁 E:深覆、深覆盖

13，21，34，55，（）。

A:67 B:89 C:73 D:84

The Function of Tomatoes How do we love tomatoes? Let’’s count the ways: we love them in pasta, on pizza, in juice, in salad and soup, sliced on sandwiches, stuffed with tuna, even dried and baked in bagels, but most of all, we love them right off vine—ripe, red, and delicious. While tomato lovers don’’t need an excuse for eating them by the bushel (蒲式耳), now there’’s even more reason to savor these delicious fruits. Evidence is mounting that people who eat tomatoes have a substantially lower risk for cancer. In a thousand-person study of eating habits and health, Harvard Medical School researchers found that those who ate tomatoes every week had the lowest chance of dying form cancer. Recently, a study of 48, 000 American men showed a 21 to 34 percent lower risk for prostate cancer(前列腺癌)among those who consumed tomatoes, tomato sauce, or pizza more than twice a week. And in study of men and women in Italy, eating seven or more serving of raw tomatoes a week was linked to a 30 to 60 percent reduction in digestive tract and prostate cancers, depending on the type of cancer. The protective qualities of the tomato are thought to come from lycopene(番茄红素) ,a potent antioxidant(抗氧化的) plant chemical that is abundant in tomatoes. Lycopene is responsible for the red color of tomatoes; the darker red the tomato is, the more lycopene it contains. Green and yellow tomatoes do not contain lycopene. Lycopoene is also found in watermelon and pink grapefruit, but tomatoes are the most abundant source. Cooking enhances the lycopene more available. Thus, tomato sauce and paste is even a better source for lycopene than fresh raw tomatoes. Lycopene is fat soluble and must be consumed with a certain amount of fat to be absorbed by the body. Tomato recipes must contain a moderate amount of oil to ensure that along with a delicious taste treat, you will also be receiving all the health benefits tomatoes have to offer. According to the passage, it is showed______ lower risk for prostate cancer among those who consumed tomatoes more than once a day.

A:a 21 to 34 percent B:a 30 to 60 percent C:a 21 to 30 percent D:a 34 to 60 percent

第一篇“Don’t Drink Alone” Gets New Meaning In what may be bad news for bars and pubs, a European research group has found that people drinking alcohol outside of meals have a significantly higher risk of cancer in the mouth and neck than do those taking their libations with food. Luigino Dal Maso and his colleagues studied the drinking patterns of 1,500 patients from four cancer studies and another 3, 500 adults who had never had cancer. After the researchers accounted for the amount of alcohol consumed, they found that individuals who downed a significant share of their alcohol outside of meals faced at least a 50 to 80 percent risk of cancer in the oral cavity, pharynx, and esophagus, when compared with people who drank only at meals. Consuming alcohol without food also increased by at least 20 percent the likelihood of laryngeal cancer. “Roughly 95 percent of cancers at these four sites traced to smoking or drinking by the study volunteers,” Dal Maso says. The discouraging news, his team reports, is that drinking with meals didn’t eliminate cancer risk at any of the sites. For their new analysis, the European scientists divided people in the study into four groups, based on how many drinks they reported having in an average week. The lowest-intake group included people who averaged up to 20 drinks a week. The highest group reported downing at least 56 servings of alcohol weekly for an average of eight or more per day. Cancer risks for the mouth and neck sites rose steadily with consumption even for people who reported drinking only with meals. For instance, compared with people in the lowest-consumption group, participants who drank 21 to 34 alcohol servings a week at least doubled their cancer risk for all sites other than the larynx. If people in these consumption groups took some of those drinks outside meals, those in the higher consumption group at least quadrupled their risk for oral cavity and esophageal cancers. People in the highest-consumption group who drank only with meals had 10 times the risk of oral cancer, 7 times the risk of pharyngeal cancer, and 16 times the risk of esophageal cancer compared with those who averaged 20 or fewer drinks a week with meals. In contrast, laryngeal cancer risk in the high-intake, with-meals-only group was only triple that in the low-intake consumers who drank with meals. “Alcohol can inflame tissues. Over time, that inflammation can trigger cancer.” Dal Maso says. He suspects that food reduced cancer risk either by partially coating digestive-tract tissues or by scrubbing alcohol off those tissues. He speculates that the reason laryngeal risks were dramatically lower for all study participants traces to the tissue’s lower exposure to alcohol.How many drinks do the lowest-intake group average per week?

A:21 B:20 C:34 D:56

The Function of Tomatoes How do we love tomatoes? Let’’s count the ways: we love them in pasta, on pizza, in juice, in salad and soup, sliced on sandwiches, stuffed with tuna, even dried and baked in bagels, but most of all, we love them right off vine—ripe, red, and delicious. While tomato lovers don’’t need an excuse for eating them by the bushel (蒲式耳), now there’’s even more reason to savor these delicious fruits. Evidence is mounting that people who eat tomatoes have a substantially lower risk for cancer. In a thousand-person study of eating habits and health, Harvard Medical School researchers found that those who ate tomatoes every week had the lowest chance of dying form cancer. Recently, a study of 48, 000 American men showed a 21 to 34 percent lower risk for prostate cancer(前列腺癌)among those who consumed tomatoes, tomato sauce, or pizza more than twice a week. And in study of men and women in Italy, eating seven or more serving of raw tomatoes a week was linked to a 30 to 60 percent reduction in digestive tract and prostate cancers, depending on the type of cancer. The protective qualities of the tomato are thought to come from lycopene(番茄红素) ,a potent antioxidant(抗氧化的) plant chemical that is abundant in tomatoes. Lycopene is responsible for the red color of tomatoes; the darker red the tomato is, the more lycopene it contains. Green and yellow tomatoes do not contain lycopene. Lycopoene is also found in watermelon and pink grapefruit, but tomatoes are the most abundant source. Cooking enhances the lycopene more available. Thus, tomato sauce and paste is even a better source for lycopene than fresh raw tomatoes. Lycopene is fat soluble and must be consumed with a certain amount of fat to be absorbed by the body. Tomato recipes must contain a moderate amount of oil to ensure that along with a delicious taste treat, you will also be receiving all the health benefits tomatoes have to offer. According to the passage, it is showed______ lower risk for prostate cancer among those who consumed tomatoes more than once a day.

A:a 21 to 34 percent B:a 30 to 60 percent C:a 21 to 30 percent D:a 34 to 60 percent