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

韵母iou、uei、uen跟辅音声母相拼时写成iu、ui、un，标调应（）

A:标在前面i或u上 B:标在后面i、u、n上 C:都标在u上 D:iu标在u上，ui标在i上，un标在u上

“iu、ui”的声调应该标在（）。

A:“i”上 B:“iu”标在“i”上，“ui”标在“u”上 C:“u”上 D:“iu”标在“u”上，“ui”标在“i”上

在使用ZC4121A自动失真仪进行测量时，输入信号ui在什么情况下应按下300V衰减开关？（）

A:ui>100V B:ui>300V C:ui<300V D:ui<100V

血糖指数（UI）

UI指的是（）。

A:高校形象 B:企业形象 C:城市形象 D:区域形象

UI帧表示（）

A:非证实信息帧 B:信息帧 C:否定回答 D:帧拒绝 E:接收准备好

UI

多级阻容耦合放大电路中，相邻两级间，前级输出的电压（Uo）与后级输入电压（Ui）相比较，它们的关系是（）

A:Uo=Ui B:UoUo>Ui C:Uo≈Ui

设在SQL Server 2008中，用户UI在DB1数据库中创建了#Temp表。下列关于#Temp表的说法中，正确的是______。

A:只有在创建#Temp表的连接中才可以查询#Temp表数据 B:在所有用户UI发起的连接中，都可以查询#Temp表数据 C:在创建#Temp的连接未断开时，DB1数据库的所有用户都可以查询#Temp表数据 D:在创建#Temp的连接断开后，DBI数据库的所有用户仍可以查询#Temp表数据