糖类抗原是一种敏感性和特异性都较高的一类肿瘤标志物，临床上常用的有CA125,CA15-3,CA19-9,CA242,CA50和CA72-4等，这些指标对不同肿瘤的敏感性和特异性各不相同，临床应用时应合理选择。

用于胰腺癌的辅助诊断和疗效监测，应首选

A:CA125 B:CA15-3 C:CA19-9 D:CA242 E:CA72-4

糖类抗原是一种敏感性和特异性都较高的一类肿瘤标志物，临床上常用的有CA125,CA15-3,CA19-9,CA242,CA50和CA72-4等，这些指标对不同肿瘤的敏感性和特异性各不相同，临床应用时应合理选择。

用于胃癌的辅助诊断和疗效监测，应首选

A:CA125 B:CA15-3 C:CA19-9 D:CA242 E:CA72-4

2-乙酰氨基芴(2-AAF)和2-氨基芴(2-AF)在机体内可形N-羟基芳酰胺和N-羟基芳胺，为近致癌物，再通过结合反应而产生的结合物可在酸性pH尿中或由肠道菌丛的β-葡萄糖苷酸酶水解，生成N-羟基芳香胺。可自发生成亲电子剂--氮宾离子，攻击DNA，引起膀胱癌和结肠癌

近致癌物N-羟基芳酰胺和N-羟基芳胺的形成通过

A:细胞色素P450和FMO催化 B:细胞色素P450催化 C:FMO催化 D:环氧水化酶催化 E:醇脱氢酶催化

Free Statins With Fast Food Could Neutralize Heart Risk

    Fast food outlets could¹ provide statin drugs free of     1     so that customers can reduce the heart disease dangers of fatty food, researchers at Imperial College London²     2      in a new

study．

    Statins reduce the      3      of unhealthy ”LDL” cholesterol³ in the blood. A wealth of trial data⁴ has proven them to be highly effective at lowering a person’s heart attack      4      .

    In a paper published in the American Journal of Cardiology⁵，Dr Darrel Francis and colleagues calculate that the reduction in heart attack risk offered by a statin is       5       to offset the increase in heart attack risk from       6       a cheeseburger and drinking a milkshake．

    Dr Francis，from the National Heart and Lung Institute at Imperial College London，who is the senior author of the study, said:”Statins don’t cut out a11 of the       7      effects of cheeseburgers and French fries⁶．It’s better to avoid fatty food altogether．But we’ve worked out that in terms of your       8      of having a heart attack. Taking a statin can reduce your risk to more or less the same    9    as a fast food meal increases it.”  “It’s ironic that people are free to take as many unhealthv condiments in fast food outlets as they       10     , but statins, which are beneficial to heart health, have to be prescribed. It makes sense⁷ to make risk-reducing statins available just as easily as the unhealthy condiments that are   l 1    free of charge．It would cost less than 5 pence per    1 2     一not much different to a sachet of sugar⁸.” Dr Francis said．

   When people engage in risky behaviours like driving or smoking, they’re encouraged to take     13     that lower their risk, 1ike    14     a seatbelt or choosing cigarettes with filters. Taking a statin is a rational way of     1 5     some of the risks of eating a fatty meal．

词汇：

statin/"stæ tIn/ n．降胆固醇药物

outlet/"autlit/ n．销售点

cholesterol/ kə"lestərɔl / n．胆固醇

offset /,ɔf"set/  V. 抵消，补偿

cheeseburger/ "tʃi:z,bə:ɡə / n．芝士汉堡包

milkshake! "milkʃeik / n．奶昔

condiment /"kɔndimənt]! n ．调味品

sachet /"sætʃei / ii ．小袋，小包

rational / "ræʃənəl / adj．合理的

注释：

1. Fast food outlets could provide statin drugs: 句中的could 是一种委婉表达建议的用词，意为“可以”。

2. Imperial College London: 帝国理工学院。该学院于1907 年由城市和行会学校、皇家矿业学校以及皇家科学学院合并组成。学院于2007 年7月正式脱离伦敦大学成为一所独立大学。提供本科和研究生教育，共有四个学院，工程学院、医学院、自然科学院和生命科学院

3. LDL cholesterol: 低密度脂蛋白胆固醇。LDL是low density lipoprotein（低密度脂蛋白）的缩写形式。

4. a wealth of trial data: 大量的试验数据。a wealth of意为“大量的，许多”。

5. American Journal of Cardiology: 美国心脏病学杂志

6. French fries:炸薯条

7.It makes sense...: make sense 意为“说得通，合情合理”。

空1

A:change  B:charge C:chain D:chance

Free Statins With Fast Food Could Neutralize Heart Risk

    Fast food outlets could¹ provide statin drugs free of     1     so that customers can reduce the heart disease dangers of fatty food, researchers at Imperial College London²     2      in a new

study．

    Statins reduce the      3      of unhealthy ”LDL” cholesterol³ in the blood. A wealth of trial data⁴ has proven them to be highly effective at lowering a person’s heart attack      4      .

    In a paper published in the American Journal of Cardiology⁵，Dr Darrel Francis and colleagues calculate that the reduction in heart attack risk offered by a statin is       5       to offset the increase in heart attack risk from       6       a cheeseburger and drinking a milkshake．

    Dr Francis，from the National Heart and Lung Institute at Imperial College London，who is the senior author of the study, said:”Statins don’t cut out a11 of the       7      effects of cheeseburgers and French fries⁶．It’s better to avoid fatty food altogether．But we’ve worked out that in terms of your       8      of having a heart attack. Taking a statin can reduce your risk to more or less the same    9    as a fast food meal increases it.”  “It’s ironic that people are free to take as many unhealthv condiments in fast food outlets as they       10     , but statins, which are beneficial to heart health, have to be prescribed. It makes sense⁷ to make risk-reducing statins available just as easily as the unhealthy condiments that are   l 1    free of charge．It would cost less than 5 pence per    1 2     一not much different to a sachet of sugar⁸.” Dr Francis said．

   When people engage in risky behaviours like driving or smoking, they’re encouraged to take     13     that lower their risk, 1ike    14     a seatbelt or choosing cigarettes with filters. Taking a statin is a rational way of     1 5     some of the risks of eating a fatty meal．

词汇：

statin/"stæ tIn/ n．降胆固醇药物

outlet/"autlit/ n．销售点

cholesterol/ kə"lestərɔl / n．胆固醇

offset /,ɔf"set/  V. 抵消，补偿

cheeseburger/ "tʃi:z,bə:ɡə / n．芝士汉堡包

milkshake! "milkʃeik / n．奶昔

condiment /"kɔndimənt]! n ．调味品

sachet /"sætʃei / ii ．小袋，小包

rational / "ræʃənəl / adj．合理的

注释：

1. Fast food outlets could provide statin drugs: 句中的could 是一种委婉表达建议的用词，意为“可以”。

2. Imperial College London: 帝国理工学院。该学院于1907 年由城市和行会学校、皇家矿业学校以及皇家科学学院合并组成。学院于2007 年7月正式脱离伦敦大学成为一所独立大学。提供本科和研究生教育，共有四个学院，工程学院、医学院、自然科学院和生命科学院

3. LDL cholesterol: 低密度脂蛋白胆固醇。LDL是low density lipoprotein（低密度脂蛋白）的缩写形式。

4. a wealth of trial data: 大量的试验数据。a wealth of意为“大量的，许多”。

5. American Journal of Cardiology: 美国心脏病学杂志

6. French fries:炸薯条

7.It makes sense...: make sense 意为“说得通，合情合理”。

空2

A:trust  B:decide C:suggest D:calculate

Free Statins With Fast Food Could Neutralize Heart Risk

    Fast food outlets could¹ provide statin drugs free of     1     so that customers can reduce the heart disease dangers of fatty food, researchers at Imperial College London²     2      in a new

study．

    Statins reduce the      3      of unhealthy ”LDL” cholesterol³ in the blood. A wealth of trial data⁴ has proven them to be highly effective at lowering a person’s heart attack      4      .

    In a paper published in the American Journal of Cardiology⁵，Dr Darrel Francis and colleagues calculate that the reduction in heart attack risk offered by a statin is       5       to offset the increase in heart attack risk from       6       a cheeseburger and drinking a milkshake．

    Dr Francis，from the National Heart and Lung Institute at Imperial College London，who is the senior author of the study, said:”Statins don’t cut out a11 of the       7      effects of cheeseburgers and French fries⁶．It’s better to avoid fatty food altogether．But we’ve worked out that in terms of your       8      of having a heart attack. Taking a statin can reduce your risk to more or less the same    9    as a fast food meal increases it.”  “It’s ironic that people are free to take as many unhealthv condiments in fast food outlets as they       10     , but statins, which are beneficial to heart health, have to be prescribed. It makes sense⁷ to make risk-reducing statins available just as easily as the unhealthy condiments that are   l 1    free of charge．It would cost less than 5 pence per    1 2     一not much different to a sachet of sugar⁸.” Dr Francis said．

   When people engage in risky behaviours like driving or smoking, they’re encouraged to take     13     that lower their risk, 1ike    14     a seatbelt or choosing cigarettes with filters. Taking a statin is a rational way of     1 5     some of the risks of eating a fatty meal．

词汇：

statin/"stæ tIn/ n．降胆固醇药物

outlet/"autlit/ n．销售点

cholesterol/ kə"lestərɔl / n．胆固醇

offset /,ɔf"set/  V. 抵消，补偿

cheeseburger/ "tʃi:z,bə:ɡə / n．芝士汉堡包

milkshake! "milkʃeik / n．奶昔

condiment /"kɔndimənt]! n ．调味品

sachet /"sætʃei / ii ．小袋，小包

rational / "ræʃənəl / adj．合理的

注释：

1. Fast food outlets could provide statin drugs: 句中的could 是一种委婉表达建议的用词，意为“可以”。

2. Imperial College London: 帝国理工学院。该学院于1907 年由城市和行会学校、皇家矿业学校以及皇家科学学院合并组成。学院于2007 年7月正式脱离伦敦大学成为一所独立大学。提供本科和研究生教育，共有四个学院，工程学院、医学院、自然科学院和生命科学院

3. LDL cholesterol: 低密度脂蛋白胆固醇。LDL是low density lipoprotein（低密度脂蛋白）的缩写形式。

4. a wealth of trial data: 大量的试验数据。a wealth of意为“大量的，许多”。

5. American Journal of Cardiology: 美国心脏病学杂志

6. French fries:炸薯条

7.It makes sense...: make sense 意为“说得通，合情合理”。

空12

A:cook     B:patient C:customer D:visitor

Free Statins With Fast Food Could Neutralize Heart Risk

    Fast food outlets could¹ provide statin drugs free of     1     so that customers can reduce the heart disease dangers of fatty food, researchers at Imperial College London²     2      in a new

study．

    Statins reduce the      3      of unhealthy ”LDL” cholesterol³ in the blood. A wealth of trial data⁴ has proven them to be highly effective at lowering a person’s heart attack      4      .

    In a paper published in the American Journal of Cardiology⁵，Dr Darrel Francis and colleagues calculate that the reduction in heart attack risk offered by a statin is       5       to offset the increase in heart attack risk from       6       a cheeseburger and drinking a milkshake．

    Dr Francis，from the National Heart and Lung Institute at Imperial College London，who is the senior author of the study, said:”Statins don’t cut out a11 of the       7      effects of cheeseburgers and French fries⁶．It’s better to avoid fatty food altogether．But we’ve worked out that in terms of your       8      of having a heart attack. Taking a statin can reduce your risk to more or less the same    9    as a fast food meal increases it.”  “It’s ironic that people are free to take as many unhealthv condiments in fast food outlets as they       10     , but statins, which are beneficial to heart health, have to be prescribed. It makes sense⁷ to make risk-reducing statins available just as easily as the unhealthy condiments that are   l 1    free of charge．It would cost less than 5 pence per    1 2     一not much different to a sachet of sugar⁸.” Dr Francis said．

   When people engage in risky behaviours like driving or smoking, they’re encouraged to take     13     that lower their risk, 1ike    14     a seatbelt or choosing cigarettes with filters. Taking a statin is a rational way of     1 5     some of the risks of eating a fatty meal．

词汇：

statin/"stæ tIn/ n．降胆固醇药物

outlet/"autlit/ n．销售点

cholesterol/ kə"lestərɔl / n．胆固醇

offset /,ɔf"set/  V. 抵消，补偿

cheeseburger/ "tʃi:z,bə:ɡə / n．芝士汉堡包

milkshake! "milkʃeik / n．奶昔

condiment /"kɔndimənt]! n ．调味品

sachet /"sætʃei / ii ．小袋，小包

rational / "ræʃənəl / adj．合理的

注释：

1. Fast food outlets could provide statin drugs: 句中的could 是一种委婉表达建议的用词，意为“可以”。

2. Imperial College London: 帝国理工学院。该学院于1907 年由城市和行会学校、皇家矿业学校以及皇家科学学院合并组成。学院于2007 年7月正式脱离伦敦大学成为一所独立大学。提供本科和研究生教育，共有四个学院，工程学院、医学院、自然科学院和生命科学院

3. LDL cholesterol: 低密度脂蛋白胆固醇。LDL是low density lipoprotein（低密度脂蛋白）的缩写形式。

4. a wealth of trial data: 大量的试验数据。a wealth of意为“大量的，许多”。

5. American Journal of Cardiology: 美国心脏病学杂志

6. French fries:炸薯条

7.It makes sense...: make sense 意为“说得通，合情合理”。

空12

A:cook     B:patient C:customer D:visitor

下列关于肽键性质和组成的叙述恰当的是

A:肽键可以自由旋转 B:由Ca1和Ca2组成 C:由Ca和N组成 D:由Ca和C-COOH组成 E:肽键有一定程度双键性质