某国原有一家全国性移动电话运营商A，拥有大量用户，其后市场开放竞争，通过拍卖频率与许可证，新增了三家移动电话运营商B,C,D。为促进竞争，该国管制机构规定：(1)运营商A未经管制机构批准不得变动业务价格，B,C,D可以在一定范围内变动业务价格；(2)运营商A不得拒绝B,C,D所提出的互联互通要求；(3)运营商A有义务向其他运营商提供与网间互联有关的网络功能,设备配置的信息，以及与互联有关的管道(孔),杆线等通信设施的使用信息。

该国管制机构对运营商A给予更多的限制，是因为在B,C,D进入市场的初期，市场竞争态势对运营商A有利，具体原因有( )。

A:运营商A享有网络规模效应 B:运营商A有条件在网间互联问题上采取阻碍竞争的行为 C:运营商A管理水平更高 D:运营商A已占有最大市场份额

药物作用靶点取决于致病相关基因。例如一疾病的致病相关基因是X1,X2和X3，某治疗药物系针对致病基因X3为靶点，且为无活性的前药，在体内经过A→B→C途径代谢成活性形式，作用于靶点X3。不同患者用药效果截然不同。

给予致病基因为X3，且药酶基因A,B,C均无突变的患者，结果是

A:非致病基因，无效 B:正中作用靶点，效果良好 C:无效，非此药作用靶点 D:无效，缘于体内不能代谢 E:基因变异影响药物结合靶点，药效不理想

根据以下材料，回答题： 某油料储运基地的储罐区内，设有1#和2#地上式立式固定顶重油储罐，3#、4#和5#内浮顶汽油储罐，其总平面布局及周边建(构)筑物等相关信息如图1—16—1所示。该储罐区按有关国家工程建设消防技术标准配置了消防设施及器材。

防火堤内的储罐布置不宜超过2排，单罐容量小于或等于1000m3且闪点大于120℃的液体储罐不宜超过（　　）排。

A:2 B:3 C:4 D:5

某男，31岁。反复中上腹疼痛10多年，解柏油样便3天伴头晕、乏力、心悸住院。急诊胃镜检查为十二指肠球后溃疡伴活动性出血。化验：RBC2．8×10^12／L，Hb 63 g／L ，白细胞11．2×10^9／L，血小板110×10^9／L，网织红细胞0．02(2％)。

［假设信息］假如铁剂治疗2个月以上，血红蛋白仍没恢复正常，其最不可能原因是

A:患者未按医嘱服药 B:铁剂失效 C:出血未控制，丢失铁超过补充铁 D:有腹泻或肠蠕动过速，影响铁剂吸收 E:同时存在溶血性贫血

某女，42岁，月经量增多3年余，头晕、乏力、活动后心慌、气短半年。妇科门诊检查有子宫肌瘤。化验：RBC 2．5×10／L，Hb 50 g／L，WBC 5．2×10／L，血小板201×10／L，红细胞中央苍白区扩大，血清铁蛋白9μ/L，诊断为缺血性贫血。

用铁剂治疗2周后血红蛋白仍未上升，其原因除哪项外均有可能

A:诊断不正确 B:患者未按医嘱服药 C:出血未纠正 D:胃肠道吸收障碍 E:存在干扰铁利用的疾病如炎症、肿瘤等

 某女性患者，26岁，来院体检。查体：P100次/min；突眼，甲状腺肿大。实验室检查：甲状腺摄碘率增高，T[8af7add4-f0c6-4de8-81c2-a3ac5fb1a083.jpeg" />抑制试验抑制率＜50%。

若该患者为妊娠3个月合并甲状腺功能亢进症，治疗选择

A:碘剂 B:β-受体阻滞药 C:手术 D:抗甲状腺药 E:放射性I

Across the Deserts

　　The SaharaDesertis the largest desert in the world. It stretches across Africa fromSenegaltoEgypt. TheSaharaDesertis an unfriendly environment. During the day it"s very hot, and at night it’s sometimes very cold. It is also difficult to find water in theSahara.

　　In 2006, Kevin Lin, Ray Zahab, and Charlie Engle decided to do something very difficult. They made the decision to run across the Sahara Desert 4,300 miles (6,920km). It seemed impossible to do, but they wanted to try. The three men liked to test themselves, and this would be a very big test.

　　On the morning of November 2, Kevin, Ray, and Charlie started their trip across theSahara. Every morning they began running at 5:00. At11 a.m. they stopped and rested until 5 p.m. Then they ran again until 9:30 in the evening. Each day they ran about 40 miles (64 km). Every day it was the same thing. They got up and ran. They listened to music on their iPods, and they ran and ran.

　　Kevin, Ray, and Charlie needed to eat a lot of food during their trip. Most people need about 2,000 calories of food each day. Kevin, Ray, and Charlie needed between 6,000 and 9,000 calories every day. That"s a lot of food! They also needed to drink a lot of water.

　　The three men had some problems on their trip, and many times they wanted to quit and go home. It was often very hot (140°F/60°C) during the day, and the heat made them sick. Their legs and feet hurt. Sometimes it was very windy, and they couldn"t see. One time they got lost. But they didn"t quit. After 111 days, Kevin, Ray; and Charlie successfully finished their trip across theSaharaDesert. They hugged each other and put their hands in the water of theRed Sea. Then they ran to a hotel to take a long shower.

　　词汇：

　　Stretch / strɛtʃ / v. 延伸，伸展

　　Calorie / "kælərɪ / n. 卡(路里)，小卡，大卡

　　Quit / kwɪt / v. 停止，放

　　注释：

Each day the men ran for approximately eight hours.

A:Right B:Wrong C:mentioned

Across the Deserts

　　The SaharaDesertis the largest desert in the world. It stretches across Africa fromSenegaltoEgypt. TheSaharaDesertis an unfriendly environment. During the day it"s very hot, and at night it’s sometimes very cold. It is also difficult to find water in theSahara.

　　In 2006, Kevin Lin, Ray Zahab, and Charlie Engle decided to do something very difficult. They made the decision to run across the Sahara Desert 4,300 miles (6,920km). It seemed impossible to do, but they wanted to try. The three men liked to test themselves, and this would be a very big test.

　　On the morning of November 2, Kevin, Ray, and Charlie started their trip across theSahara. Every morning they began running at 5:00. At11 a.m. they stopped and rested until 5 p.m. Then they ran again until 9:30 in the evening. Each day they ran about 40 miles (64 km). Every day it was the same thing. They got up and ran. They listened to music on their iPods, and they ran and ran.

　　Kevin, Ray, and Charlie needed to eat a lot of food during their trip. Most people need about 2,000 calories of food each day. Kevin, Ray, and Charlie needed between 6,000 and 9,000 calories every day. That"s a lot of food! They also needed to drink a lot of water.

　　The three men had some problems on their trip, and many times they wanted to quit and go home. It was often very hot (140°F/60°C) during the day, and the heat made them sick. Their legs and feet hurt. Sometimes it was very windy, and they couldn"t see. One time they got lost. But they didn"t quit. After 111 days, Kevin, Ray; and Charlie successfully finished their trip across theSaharaDesert. They hugged each other and put their hands in the water of theRed Sea. Then they ran to a hotel to take a long shower.

　　词汇：

　　Stretch / strɛtʃ / v. 延伸，伸展

　　Calorie / "kælərɪ / n. 卡(路里)，小卡，大卡

　　Quit / kwɪt / v. 停止，放

　　注释：

In the middle of the day: the men usually stopped running.

A:Right B:Wrong C:mentioned

Across the Deserts

　　The SaharaDesertis the largest desert in the world. It stretches across Africa fromSenegaltoEgypt. TheSaharaDesertis an unfriendly environment. During the day it"s very hot, and at night it’s sometimes very cold. It is also difficult to find water in theSahara.

　　In 2006, Kevin Lin, Ray Zahab, and Charlie Engle decided to do something very difficult. They made the decision to run across the Sahara Desert 4,300 miles (6,920km). It seemed impossible to do, but they wanted to try. The three men liked to test themselves, and this would be a very big test.

　　On the morning of November 2, Kevin, Ray, and Charlie started their trip across theSahara. Every morning they began running at 5:00. At11 a.m. they stopped and rested until 5 p.m. Then they ran again until 9:30 in the evening. Each day they ran about 40 miles (64 km). Every day it was the same thing. They got up and ran. They listened to music on their iPods, and they ran and ran.

　　Kevin, Ray, and Charlie needed to eat a lot of food during their trip. Most people need about 2,000 calories of food each day. Kevin, Ray, and Charlie needed between 6,000 and 9,000 calories every day. That"s a lot of food! They also needed to drink a lot of water.

　　The three men had some problems on their trip, and many times they wanted to quit and go home. It was often very hot (140°F/60°C) during the day, and the heat made them sick. Their legs and feet hurt. Sometimes it was very windy, and they couldn"t see. One time they got lost. But they didn"t quit. After 111 days, Kevin, Ray; and Charlie successfully finished their trip across theSaharaDesert. They hugged each other and put their hands in the water of theRed Sea. Then they ran to a hotel to take a long shower.

　　词汇：

　　Stretch / strɛtʃ / v. 延伸，伸展

　　Calorie / "kælərɪ / n. 卡(路里)，小卡，大卡

　　Quit / kwɪt / v. 停止，放

　　注释：

They sometimes felt sick because it was so hot.

A:Right B:Wrong C:mentioned

Across the Deserts

　　The SaharaDesertis the largest desert in the world. It stretches across Africa fromSenegaltoEgypt. TheSaharaDesertis an unfriendly environment. During the day it"s very hot, and at night it’s sometimes very cold. It is also difficult to find water in theSahara.

　　In 2006, Kevin Lin, Ray Zahab, and Charlie Engle decided to do something very difficult. They made the decision to run across the Sahara Desert 4,300 miles (6,920km). It seemed impossible to do, but they wanted to try. The three men liked to test themselves, and this would be a very big test.

　　On the morning of November 2, Kevin, Ray, and Charlie started their trip across theSahara. Every morning they began running at 5:00. At11 a.m. they stopped and rested until 5 p.m. Then they ran again until 9:30 in the evening. Each day they ran about 40 miles (64 km). Every day it was the same thing. They got up and ran. They listened to music on their iPods, and they ran and ran.

　　Kevin, Ray, and Charlie needed to eat a lot of food during their trip. Most people need about 2,000 calories of food each day. Kevin, Ray, and Charlie needed between 6,000 and 9,000 calories every day. That"s a lot of food! They also needed to drink a lot of water.

　　The three men had some problems on their trip, and many times they wanted to quit and go home. It was often very hot (140°F/60°C) during the day, and the heat made them sick. Their legs and feet hurt. Sometimes it was very windy, and they couldn"t see. One time they got lost. But they didn"t quit. After 111 days, Kevin, Ray; and Charlie successfully finished their trip across theSaharaDesert. They hugged each other and put their hands in the water of theRed Sea. Then they ran to a hotel to take a long shower.

　　词汇：

　　Stretch / strɛtʃ / v. 延伸，伸展

　　Calorie / "kælərɪ / n. 卡(路里)，小卡，大卡

　　Quit / kwɪt / v. 停止，放

　　注释：

On their trip across the desert: the three men ran through five countries.

A:Right B:Wrong C:mentioned