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【简答题】
阅读理解。 Many people like to search the Internet. Exploring the Internet is one of the most important activities of the day. The Internet brings the outside world closer to people's homes. Some people say the world is smaller than before because of the Internet. What's going on in other countries? How do people live in places far away? Is there a good sports game so mewhere? What's the life in the deepest part of sea? If you want answer all these questions, just come to the Internet. Of course, people can also learn through reading or listening to the radio. But with the Internet they can learn better and more easily. A lot of information can be collected at a great speed. Can we go shopping without leaving home? Can we see a doctor without going to the hospital? Can we study without going to school? Can we draw money without going to bank? All these things seemed to be impossible, but now they have become quite possible. The Internet helps us open our eyes. The Internet also helps open our minds. The Internet often gives us new ideas. In a word, it helps us in many ways. Great changes have taken place in our life since the appearance of the Internet. 1. Some people say the world is smaller than before because _____________ . [     ] A. all people kike to search the Internet. B. the Internet makes the earth smaller in size C. the Internet brings the outside world closer to them 2. The sentence 'The Internet also helps us open our mind.' means _______ . [     ] A. the Internet is new to us B. something is wrong with our minds C. we can learn more with the help of the Internet 3. We can't ________ through the Internet. [     ] A. know a good sports match somewhere B. cook the meal C. know a lot of information 4. This passage has told us __________. [     ] A. it's helpful to explore the Internet B. not to explore the Internet any more C. to stop reading and to explore the Internet 5. Which of the following sentences is Not true? [     ] A. The Internet can get the information faster than reading B. Without leaving home, we can get money from the bank by radio C. People can learn better and more through the Internet
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举一反三
【单选题】维生素B 1 又称
A.
核黄素
B.
硫胺素
C.
钴胺素
D.
牛磺素
【简答题】已知点N( 5 2 ,0),以N为圆心的圆与直线l 1 :y=x和l 2 :y=-x都相切. (Ⅰ)求圆N的方程; (Ⅱ)设l分别与直线l 1 和l 2 交于A、B两点,且AB中点为E(4,1),试判断直线l与圆N的位置关系,并说明理由.
【单选题】维生素B1又称
A.
抗坏血酸
B.
抗干眼病维生素
C.
抗脚气病维生素
D.
抗佝偻病维生素维
E.
凝血维生素他
【简答题】已知在直角坐标系x0y内,直线l的参数方程为 x=2+2t y=1+4t (t为参数).以Ox为极轴建立极坐标系,圆C的极坐标方程为 ρ=2 2 sin(θ+ π 4 ) . (1)写出直线l的普通方程和圆C的直角坐标方程; (2)判断直线l和圆C的位置关系.
【简答题】现有A、B、C、D、E、F六种短周期元素,原子序数依次增大。已知A与D、C与E分别同主族,D、E、F同周期;A、B的最外层电子数之和与C的最外层电子数相等,A与C形成的化合物常温下均为液态,A分别与E、F形成的气体分子电子总数相等。请回答下列问题: (1) 元素B在周期表中的位置______________。 (2) A 2 C比A 2 E沸点高的原因是______________________...
【单选题】维生素B1又称
A.
抗眼干燥症维生素
B.
抗癞皮病维生素
C.
抗坏血病维生素
D.
抗脚气病维生素
E.
凝血维生素
【单选题】维生素B1又称
A.
凝血维生素
B.
硫胺素
C.
核黄素
D.
钴胺素
E.
转钴胺素
【判断题】企业再造理论是由彼得·圣吉提出的。
A.
正确
B.
错误
【判断题】企业再造理论是由彼得·圣吉提出的。
A.
正确
B.
错误
【简答题】若常数 ,则函数 的定义域为 .
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