关于腮腺恶性肿瘤外科手术原则错误的是（）。
A.腺样囊性癌已出现肺转移者，原发灶切除术已无意义
B.腮腺深叶癌无面神经受侵者可行保留面神经的全腮腺切除
C.位于腮腺浅叶的、较小的、无外侵的腺泡细胞癌，可行保留面神经的腮腺浅叶切除
D.如果肿瘤侵犯周围组织，应将受侵的和邻近组织切除
E.腺样囊性癌神经侵犯者应切到切缘阴性为止
参考答案：A
解析：腺样囊性癌肺转移后仍可生存较长时间，在已出现肺转移时仍可行原发灶切除术。位于腮腺深叶的癌和位于腮腺浅叶的低分化黏液表皮样癌、分化差的腺癌、恶性混合瘤、鳞癌、未分化癌及腺样囊性癌，均应行保留面神经的全腮腺切除。位于腮腺浅叶的、较小的而且无外侵的高分化黏液表皮样癌及腺泡细胞癌，可行保留面神经的腮腺浅叶切除。如果肿瘤侵犯周围组织，应将肿瘤侵犯的或直接与肿瘤贴近的组织切除。腺样囊性癌局部浸润范围广，局部复发率高，对受侵的神经要切到切缘阴性为止。A项说法错误。
| 阅读理解。 |
| What is American food? At first you might think the answer is as easy as pie. To many people, American food means hamburgers, hot dogs, fried chicken and pizza. If you have a "sweet tooth", you might think of apple pies or chocolate cakes. It's true that Americans do eat those things. But are those the only kind of food you can find in America? Except for Thanksgiving turkey, it's hard to find a typical (典型的) "American" food. The United States is a land of immigrants (移民). So Americans eat food from many different countries. When people moved to America, they brought their cooking styles (方式、类型) with them. That's why you can find almost every kind of ethnic (民族) food in America. In some ways, Americans have taken foods from other countries as favorites. Americans love Italian pizza, Chinese egg rolls. But the American ones don't taste quite like the food where it comes from. As any large country, the US has several special regions (地区). Each region is proud of its own special style of food. Visit the South and enjoy country-style cooking. Take a trip to New England and taste delicious seafood dishes. Travel through Midwest for tasty baked food. Travel over Southwest and try good treats. Finish your food tour in Northwest with some wonderful coffee. Americans are living at a fast pace (步速). Fast food restaurants offer people on the run everything from fried chicken to fried rice. Half-done dinners and fast food make cooking at home very easy. One of the most popular quick meals is sandwich. If the meat or cheese can be put between two pieces of bread, Americans probably make a sandwich. Americans on the go also eat a lot of "junk food". Potato chips, candy bars, soft drinks and so on are popular treats. Many people eat too much of these unhealthy food. But others choose for more healthy eating habits. Some even go "all natural". They refuse to eat any food prepared with chemicals. American culture (文化) is a good example of the saying, "You're what you eat."There is different background and ways of thinking. The kind of foods enjoyed in the US shows all kinds of personal tastes. The food may be international and regional. Sometimes it's fast, and sometimes it's not so fast. It might be junk food or maybe it's natural food. No matter what it is, the style is all-American. |
| 1. The ethnic foods that the Americans prefer _______. |
[ ] |
| A. are Italian and Chinese food B. are easy to prepare C. have some changes in their taste D. are healthy and natural |
| 2. Why can you find almost every kind of ethnic food in America? |
[ ] |
| A. Because Americans enjoy eating. B. Because immigrants to America bring their ways of cooking with them. C. Because it's easy to make ethnic food. D. Because Americans like to try new-style cooking. |
| 3. The third paragraph mainly tells us _______. |
[ ] |
| A. where you can find the delicious food B. Americans like traveling to different regions C. There are some special regions in America D. Americans can enjoy some special food in special regions |
| 4. From the passage, we know _______. |
[ ] |
| A. there is no typical American food in the US B. natural food is the most healthy food C. all Americans like to eat fast food because it is easy to make D. the culture of a country decides its food styles |