若进行u检验，公式为

A:u=|p1－p2|/sp1-p2 B:u=|p－π|/sp C:u=|p1－p2|/σp D:u=|p1－p2|/sp E:u=|p－π|/σp

某医生收集到数据经过统计学家分析应该进行t检验

进行t检验的资料应满足的条件是

A:负偏态资料 B:正偏态资料 C:偏态资料 D:正态或近似正态资料 E:以上都不是

某医生选择适当资料计算相应指标，进行t检验。

进行t检验的资料应满足的条件是

A:负偏态资料 B:正偏态资料 C:偏态资料 D:正态或近似正态资料 E:正态或负态资料

为研究45岁以上男性体重指数(BMl)≥25者糖尿病患病率是否高于体重指数<25的人群，某医师将资料汇总如下表

若进行u检验，公式为

A:u=|p1－p2|/sp1-p2 B:u=|p－π|/sp C:u=|p1－p2|/σp D:u=|p1－p2|/sp E:u=|p－π|/σp

Aspirin — a New Miracle Drug

    1. Using aspirin, an over-the-counter pill on sale¹ in every supermarket without a prescription, to treat serious circulatory disease may seem almost like quackery. But today doctors recognize this drug as a potent compound as important as antibiotics, digitalis and other miracle drugs.

    2. In its natural form as willow bark and leaves, this remarkable remedy dates back to Hippocrates². In 1829 the chemical in the willow tree that can relieve pain and reduce fever was discovered to be salicin. By 1899 the Bayer Company in Germanyhad marketed a variant, acetylsalicylic acid,³ under the name of aspirin.

    3. Since then, aspirin and confounds containing aspirin have been taken by tens of millions of arthritis patients. As a pain killer aspirin is, according to one study, more effective than all other analgesics and narcotics available for oral use. It also acts on⁴ the body’s thermostat, turning down fever.

    4. But some of its powers remained unsuspected until recently. In 1950 the late Dr. Craven wrote to a small western medical journal about 400 overweight, sedentary male patients to whom he had given one or two aspirin tablets a day. None had had a heart attack. He enlarged his group to 8,000 and in 1956 reported：”Not a single case of detectable coronary or cerebral thrombosis⁵ ” and “no major stroke” had occurred in patients who had taken one or two tablets daily for from one to ten years. But his observations were largely ignored.

    5. Then Dr. Vane proved that aspirin turned off the body’s prostaglandins⁶ hormonelike chemicals that can be secreted by every cell. Some potent prostaglandins are harmful compounds that create fever, pain and arthritis. One of them stimulates platelets in the blood to begin forming clots inside arteries. Aspirin blocks this dangerous effect.

    6. Vane’s finding caused some researchers to recall Craven’s 1956 observations, which now had a possible scientific explanation. Numerous studies were begun to find out whether aspirin could indeed inhibit heart attacks and stroke.

    7. In 1972, tenUSmedical institutions began two “double-blind” trials⁷ of 303 patients who suffered from transient ischemic attacks (TIAs)⁸. Four aspirin tablets a day were given to 153 patients, while placebo tablets were given to 150. Neither patients nor doctors knew which was which. After six months, the patients on aspirin had experienced much fewer TIAs, and fewer strokes and deaths from strokes than the “controls”. The results were so conclusive that aspirin has been used for this purpose widely.

词汇：

quackery/ˈkwækəri/ n.江湖医术

narcotic/nɑ:ˈkɔtɪk/ n.麻醉药；adj.麻醉的

potent /ˈpəutənt/ adj.有效力的

thermostat/ˈθɜ:məˌstæt/ n.恒温器

antibiotic/ˌæntɪbaɪˈɔtɪk，ˌæntaɪ-/ n.抗生素；adj.抗生的

sedentary /ˈsednˌteri:/ adj.坐着的

digitalis/ˌdidʒiˈteilis/ n.毛地黄，洋地黄

prostaglandin/ˌprɔstəˈglændɪn/n. 前列腺素

willow/ˈwiləu/ n.柳树

platelet/ˈpleitlit/ n.（血）小板

bark/bɑ:k/n. 树皮

clot/klɒt/n. 凝块，血块

salicin/ˈsælisin/n. 水杨醇葡萄糖甙（镇痛药）

artery/ˈɑ:təri/n. 动脉

variant/ˈveəri:ənt，ˈvær-/n. 变种；adj.变异的

placebo/pləˈsi:bəʊ/n. 安慰剂，安慰剂治疗

arthritis/ɑ:ˈθraɪtɪs/n. 关节炎

control/kənˈtrəul/n. 对照，对照物

analgesic/kənˈtrəul/ n.止痛药；adj.止痛的

注释：

1.an over-the-counter pill on sale：摆在柜台上（不需处方）出售的药丸pill：药丸，丸剂on sale：（商店的货物等供）出售的

2.this remarkable remedy dates back to Hippocrates：这种疗效显着的治疗剂可以回溯到希波克拉底时代date back to：追溯，回溯至Hippocrates：希波克拉底（公元前460 –公元前370），希腊医生，世称“医学之父”

3.acetylsalicylic acid：乙酰水杨酸

4.act on：对……起作用

5.coronary or cerebral thrombosis ：冠状动脉血栓（形成）或者脑血栓（形成）

6.turn off the body’s prostaglandins：改变身体前列腺素的有害作用turn off：避开（问题等）；使改变方向

7.“double-blind”trial：“双盲”试验（指在药物临床评价时不让病人和医务人员知道所试药物究属何种）

8.transient ischemic attack (TIA)：一次性缺血发作

B Pain-relieving and Fever-reducing Effects of Aspirin

C The Ignored Significant Observations

D The Origin of Aspirin

E An Explanation of Craven’s Observations

Paragraph 2        

A:A B:B C:C D:D E:E F:F

Aspirin — a New Miracle Drug

    1. Using aspirin, an over-the-counter pill on sale¹ in every supermarket without a prescription, to treat serious circulatory disease may seem almost like quackery. But today doctors recognize this drug as a potent compound as important as antibiotics, digitalis and other miracle drugs.

    2. In its natural form as willow bark and leaves, this remarkable remedy dates back to Hippocrates². In 1829 the chemical in the willow tree that can relieve pain and reduce fever was discovered to be salicin. By 1899 the Bayer Company in Germanyhad marketed a variant, acetylsalicylic acid,³ under the name of aspirin.

    3. Since then, aspirin and confounds containing aspirin have been taken by tens of millions of arthritis patients. As a pain killer aspirin is, according to one study, more effective than all other analgesics and narcotics available for oral use. It also acts on⁴ the body’s thermostat, turning down fever.

    4. But some of its powers remained unsuspected until recently. In 1950 the late Dr. Craven wrote to a small western medical journal about 400 overweight, sedentary male patients to whom he had given one or two aspirin tablets a day. None had had a heart attack. He enlarged his group to 8,000 and in 1956 reported：”Not a single case of detectable coronary or cerebral thrombosis⁵ ” and “no major stroke” had occurred in patients who had taken one or two tablets daily for from one to ten years. But his observations were largely ignored.

    5. Then Dr. Vane proved that aspirin turned off the body’s prostaglandins⁶ hormonelike chemicals that can be secreted by every cell. Some potent prostaglandins are harmful compounds that create fever, pain and arthritis. One of them stimulates platelets in the blood to begin forming clots inside arteries. Aspirin blocks this dangerous effect.

    6. Vane’s finding caused some researchers to recall Craven’s 1956 observations, which now had a possible scientific explanation. Numerous studies were begun to find out whether aspirin could indeed inhibit heart attacks and stroke.

    7. In 1972, tenUSmedical institutions began two “double-blind” trials⁷ of 303 patients who suffered from transient ischemic attacks (TIAs)⁸. Four aspirin tablets a day were given to 153 patients, while placebo tablets were given to 150. Neither patients nor doctors knew which was which. After six months, the patients on aspirin had experienced much fewer TIAs, and fewer strokes and deaths from strokes than the “controls”. The results were so conclusive that aspirin has been used for this purpose widely.

词汇：

quackery/ˈkwækəri/ n.江湖医术

narcotic/nɑ:ˈkɔtɪk/ n.麻醉药；adj.麻醉的

potent /ˈpəutənt/ adj.有效力的

thermostat/ˈθɜ:məˌstæt/ n.恒温器

antibiotic/ˌæntɪbaɪˈɔtɪk，ˌæntaɪ-/ n.抗生素；adj.抗生的

sedentary /ˈsednˌteri:/ adj.坐着的

digitalis/ˌdidʒiˈteilis/ n.毛地黄，洋地黄

prostaglandin/ˌprɔstəˈglændɪn/n. 前列腺素

willow/ˈwiləu/ n.柳树

platelet/ˈpleitlit/ n.（血）小板

bark/bɑ:k/n. 树皮

clot/klɒt/n. 凝块，血块

salicin/ˈsælisin/n. 水杨醇葡萄糖甙（镇痛药）

artery/ˈɑ:təri/n. 动脉

variant/ˈveəri:ənt，ˈvær-/n. 变种；adj.变异的

placebo/pləˈsi:bəʊ/n. 安慰剂，安慰剂治疗

arthritis/ɑ:ˈθraɪtɪs/n. 关节炎

control/kənˈtrəul/n. 对照，对照物

analgesic/kənˈtrəul/ n.止痛药；adj.止痛的

注释：

1.an over-the-counter pill on sale：摆在柜台上（不需处方）出售的药丸pill：药丸，丸剂on sale：（商店的货物等供）出售的

2.this remarkable remedy dates back to Hippocrates：这种疗效显着的治疗剂可以回溯到希波克拉底时代date back to：追溯，回溯至Hippocrates：希波克拉底（公元前460 –公元前370），希腊医生，世称“医学之父”

3.acetylsalicylic acid：乙酰水杨酸

4.act on：对……起作用

5.coronary or cerebral thrombosis ：冠状动脉血栓（形成）或者脑血栓（形成）

6.turn off the body’s prostaglandins：改变身体前列腺素的有害作用turn off：避开（问题等）；使改变方向

7.“double-blind”trial：“双盲”试验（指在药物临床评价时不让病人和医务人员知道所试药物究属何种）

8.transient ischemic attack (TIA)：一次性缺血发作

B two “double-blind” trials of patients with heart disease

C that first produced aspirin for sale

D the unsuspected effect on pain and fever

E important observations on the effects of aspirin

In the middle of the last century Craven made       

A:A B:B C:C D:D E:E F:F

Aspirin — a New Miracle Drug

    1. Using aspirin, an over-the-counter pill on sale¹ in every supermarket without a prescription, to treat serious circulatory disease may seem almost like quackery. But today doctors recognize this drug as a potent compound as important as antibiotics, digitalis and other miracle drugs.

    2. In its natural form as willow bark and leaves, this remarkable remedy dates back to Hippocrates². In 1829 the chemical in the willow tree that can relieve pain and reduce fever was discovered to be salicin. By 1899 the Bayer Company in Germanyhad marketed a variant, acetylsalicylic acid,³ under the name of aspirin.

    3. Since then, aspirin and confounds containing aspirin have been taken by tens of millions of arthritis patients. As a pain killer aspirin is, according to one study, more effective than all other analgesics and narcotics available for oral use. It also acts on⁴ the body’s thermostat, turning down fever.

    4. But some of its powers remained unsuspected until recently. In 1950 the late Dr. Craven wrote to a small western medical journal about 400 overweight, sedentary male patients to whom he had given one or two aspirin tablets a day. None had had a heart attack. He enlarged his group to 8,000 and in 1956 reported：”Not a single case of detectable coronary or cerebral thrombosis⁵ ” and “no major stroke” had occurred in patients who had taken one or two tablets daily for from one to ten years. But his observations were largely ignored.

    5. Then Dr. Vane proved that aspirin turned off the body’s prostaglandins⁶ hormonelike chemicals that can be secreted by every cell. Some potent prostaglandins are harmful compounds that create fever, pain and arthritis. One of them stimulates platelets in the blood to begin forming clots inside arteries. Aspirin blocks this dangerous effect.

    6. Vane’s finding caused some researchers to recall Craven’s 1956 observations, which now had a possible scientific explanation. Numerous studies were begun to find out whether aspirin could indeed inhibit heart attacks and stroke.

    7. In 1972, tenUSmedical institutions began two “double-blind” trials⁷ of 303 patients who suffered from transient ischemic attacks (TIAs)⁸. Four aspirin tablets a day were given to 153 patients, while placebo tablets were given to 150. Neither patients nor doctors knew which was which. After six months, the patients on aspirin had experienced much fewer TIAs, and fewer strokes and deaths from strokes than the “controls”. The results were so conclusive that aspirin has been used for this purpose widely.

词汇：

quackery/ˈkwækəri/ n.江湖医术

narcotic/nɑ:ˈkɔtɪk/ n.麻醉药；adj.麻醉的

potent /ˈpəutənt/ adj.有效力的

thermostat/ˈθɜ:məˌstæt/ n.恒温器

antibiotic/ˌæntɪbaɪˈɔtɪk，ˌæntaɪ-/ n.抗生素；adj.抗生的

sedentary /ˈsednˌteri:/ adj.坐着的

digitalis/ˌdidʒiˈteilis/ n.毛地黄，洋地黄

prostaglandin/ˌprɔstəˈglændɪn/n. 前列腺素

willow/ˈwiləu/ n.柳树

platelet/ˈpleitlit/ n.（血）小板

bark/bɑ:k/n. 树皮

clot/klɒt/n. 凝块，血块

salicin/ˈsælisin/n. 水杨醇葡萄糖甙（镇痛药）

artery/ˈɑ:təri/n. 动脉

variant/ˈveəri:ənt，ˈvær-/n. 变种；adj.变异的

placebo/pləˈsi:bəʊ/n. 安慰剂，安慰剂治疗

arthritis/ɑ:ˈθraɪtɪs/n. 关节炎

control/kənˈtrəul/n. 对照，对照物

analgesic/kənˈtrəul/ n.止痛药；adj.止痛的

注释：

1.an over-the-counter pill on sale：摆在柜台上（不需处方）出售的药丸pill：药丸，丸剂on sale：（商店的货物等供）出售的

2.this remarkable remedy dates back to Hippocrates：这种疗效显着的治疗剂可以回溯到希波克拉底时代date back to：追溯，回溯至Hippocrates：希波克拉底（公元前460 –公元前370），希腊医生，世称“医学之父”

3.acetylsalicylic acid：乙酰水杨酸

4.act on：对……起作用

5.coronary or cerebral thrombosis ：冠状动脉血栓（形成）或者脑血栓（形成）

6.turn off the body’s prostaglandins：改变身体前列腺素的有害作用turn off：避开（问题等）；使改变方向

7.“double-blind”trial：“双盲”试验（指在药物临床评价时不让病人和医务人员知道所试药物究属何种）

8.transient ischemic attack (TIA)：一次性缺血发作

B two “double-blind” trials of patients with heart disease

C that first produced aspirin for sale

D the unsuspected effect on pain and fever

E important observations on the effects of aspirin

Numerous studies concluded       

A:A B:B C:C D:D E:E F:F

Aspirin — a New Miracle Drug

    1. Using aspirin, an over-the-counter pill on sale¹ in every supermarket without a prescription, to treat serious circulatory disease may seem almost like quackery. But today doctors recognize this drug as a potent compound as important as antibiotics, digitalis and other miracle drugs.

    2. In its natural form as willow bark and leaves, this remarkable remedy dates back to Hippocrates². In 1829 the chemical in the willow tree that can relieve pain and reduce fever was discovered to be salicin. By 1899 the Bayer Company in Germanyhad marketed a variant, acetylsalicylic acid,³ under the name of aspirin.

    3. Since then, aspirin and confounds containing aspirin have been taken by tens of millions of arthritis patients. As a pain killer aspirin is, according to one study, more effective than all other analgesics and narcotics available for oral use. It also acts on⁴ the body’s thermostat, turning down fever.

    4. But some of its powers remained unsuspected until recently. In 1950 the late Dr. Craven wrote to a small western medical journal about 400 overweight, sedentary male patients to whom he had given one or two aspirin tablets a day. None had had a heart attack. He enlarged his group to 8,000 and in 1956 reported：”Not a single case of detectable coronary or cerebral thrombosis⁵ ” and “no major stroke” had occurred in patients who had taken one or two tablets daily for from one to ten years. But his observations were largely ignored.

    5. Then Dr. Vane proved that aspirin turned off the body’s prostaglandins⁶ hormonelike chemicals that can be secreted by every cell. Some potent prostaglandins are harmful compounds that create fever, pain and arthritis. One of them stimulates platelets in the blood to begin forming clots inside arteries. Aspirin blocks this dangerous effect.

    6. Vane’s finding caused some researchers to recall Craven’s 1956 observations, which now had a possible scientific explanation. Numerous studies were begun to find out whether aspirin could indeed inhibit heart attacks and stroke.

    7. In 1972, tenUSmedical institutions began two “double-blind” trials⁷ of 303 patients who suffered from transient ischemic attacks (TIAs)⁸. Four aspirin tablets a day were given to 153 patients, while placebo tablets were given to 150. Neither patients nor doctors knew which was which. After six months, the patients on aspirin had experienced much fewer TIAs, and fewer strokes and deaths from strokes than the “controls”. The results were so conclusive that aspirin has been used for this purpose widely.

词汇：

quackery/ˈkwækəri/ n.江湖医术

narcotic/nɑ:ˈkɔtɪk/ n.麻醉药；adj.麻醉的

potent /ˈpəutənt/ adj.有效力的

thermostat/ˈθɜ:məˌstæt/ n.恒温器

antibiotic/ˌæntɪbaɪˈɔtɪk，ˌæntaɪ-/ n.抗生素；adj.抗生的

sedentary /ˈsednˌteri:/ adj.坐着的

digitalis/ˌdidʒiˈteilis/ n.毛地黄，洋地黄

prostaglandin/ˌprɔstəˈglændɪn/n. 前列腺素

willow/ˈwiləu/ n.柳树

platelet/ˈpleitlit/ n.（血）小板

bark/bɑ:k/n. 树皮

clot/klɒt/n. 凝块，血块

salicin/ˈsælisin/n. 水杨醇葡萄糖甙（镇痛药）

artery/ˈɑ:təri/n. 动脉

variant/ˈveəri:ənt，ˈvær-/n. 变种；adj.变异的

placebo/pləˈsi:bəʊ/n. 安慰剂，安慰剂治疗

arthritis/ɑ:ˈθraɪtɪs/n. 关节炎

control/kənˈtrəul/n. 对照，对照物

analgesic/kənˈtrəul/ n.止痛药；adj.止痛的

注释：

1.an over-the-counter pill on sale：摆在柜台上（不需处方）出售的药丸pill：药丸，丸剂on sale：（商店的货物等供）出售的

2.this remarkable remedy dates back to Hippocrates：这种疗效显着的治疗剂可以回溯到希波克拉底时代date back to：追溯，回溯至Hippocrates：希波克拉底（公元前460 –公元前370），希腊医生，世称“医学之父”

3.acetylsalicylic acid：乙酰水杨酸

4.act on：对……起作用

5.coronary or cerebral thrombosis ：冠状动脉血栓（形成）或者脑血栓（形成）

6.turn off the body’s prostaglandins：改变身体前列腺素的有害作用turn off：避开（问题等）；使改变方向

7.“double-blind”trial：“双盲”试验（指在药物临床评价时不让病人和医务人员知道所试药物究属何种）

8.transient ischemic attack (TIA)：一次性缺血发作

B Pain-relieving and Fever-reducing Effects of Aspirin

C The Ignored Significant Observations

D The Origin of Aspirin

E An Explanation of Craven’s Observations

Paragraph 3       

A:A B:B C:C D:D E:E F:F

英语目前是世界上不同语言群体之间进行交流的主要方式。这种交流是文化间的知识交流，它的          是存在着分离的文化。换句话说。作为通用语言的英语是处理语言差异和文化差异的方式，而不是          它们的方式。 依次填入划横线部分最恰当的一项是：

A:表达 同化  B:特征 隔绝  C:基础 统一  D:前提 消灭