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【简答题】
Ted Schredd doesn’t like cars. He wants people to stop driving because cars make the air dirty. Ted had an idea. He said, “I’m going to cycle around North America. I want to show everyone that cycling is a fun way to get around. If more people ride bikes, the air will be cleaner.” He left his hometown with $160 in his pocket. When he got to San Diego, he met another cyclist. The cyclist invited Ted to speak at a big meeting about the environment. He said, “We’ll pay your airfare to Texas and we’ll pay you to talk about your cycling trip.” Two hours later, Ted was on a plane to the environmental conference and to a big surprise! Wile he was at the conference, he met Deanna. It was love at first sight! They talked for six hours straight. The next day, Ted called Deanna and asked her to finish the trip with him. Deanna said yes, sold everything in her apartment, gave her notice at work, and was on the road with Ted 20 days later! “It was difficult at first,” said Deana. “Ted got up every morning at 6:00 a.m., but I wanted to sleep until noon.” After a few days, they started having fun. As they cycled from Florida to Montreal and then back to Vancouver, ever day was an adventure. People paid for their food in restaurants and gave them extra money. Some people gave them $50 or $100. They slept in people’s backyards and drank beer with motorcycle gangs. On their way back to Vancouver, they stopped in Edmonton to visit Ted’s relatives. During the stopover, they got married. People tied a “Just Married” sign and tin cans to the backs of their bikes. They now want to write a book about their trip. “We want people to know that you can be an environmentalist and still have fun,” Schredd said.
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举一反三
【多选题】下列属于完全抗原的是
A.
红细胞抗原
B.
白细胞抗原
C.
血小板抗原
D.
青霉素
【单选题】下列属于完全抗原的是
A.
青霉素
B.
磺胺药
C.
病毒蛋白
D.
细胞因子
E.
金属离子
【多选题】下列各项中,应通过其他应付款科目核算的是( )。
A.
应付经营租赁固定资产租金
B.
出售材料应当收取的价款
C.
租入包装物租金
D.
存入保证金
【简答题】根据断层两盘的相对位移关系可分为 和 两类。
【单选题】在相关分析中,变量与之间的负相关是指( )。
A.
数值增大时也随之增大
B.
数值减少时也随之减少
C.
数值增大(或减少)时随之减少(或增大)
D.
的取值几乎不受取值的影响
【单选题】以下“无为而治”的两个典型治世是:______
A.
文景之治 汉武盛世
B.
文景之治 贞观之治
C.
贞观之治 开元盛世
D.
贞观之治 康乾盛世
【单选题】化工装置停车操作必须泄压排尽,抽堵盲板前应仔细检查管道和检修设备内的( )是否已降下,一般要求管道内介质温度小于60°C.
A.
压强
B.
流量
C.
液位
D.
蒸汽
【单选题】维管射线和髓射线的区别是(    )。
A.
维管射线是初生结构,数目固定
B.
维管射线是次生结构,数目不固定
C.
维管射线是初生结构,位于维管束之间
D.
维管射线是次生结构,位于维管束之间
【单选题】“查询没有学习成绩的学生的学号和课程号”的SQL语 句是( )
A.
SELECT  学号,课程号 FROM  选课 WHERE  成绩 = NULL
B.
SELECT  学号,课程号FROM  选课 WHERE  成绩IS  ' '
C.
SELECT  学号,课程号FROM  选课 WHERE  成绩IS  NULL
D.
SELECT  学号,课程号FROM  选课 WHERE  成绩= ' '
【多选题】负相关是指( )。
A.
自变量增大时,因变量也增大
B.
自变量增大时,因变量减小
C.
自变量减小时,因变量增大
D.
两个变量变化的方向相反
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