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【简答题】
When he was just 19, Michael Dell started the company that would dominate the industry. At the time, IBM personal computers sold in stores for about $3,000. After taking them apart and rebuilding them, Dell realized the components (零部件) could be bought for one-fourth the price. Soon he was buying components to reduce the cost. A good business decision, but it meant his room was starting to look like a mechanic’s shop. “I was quite excited about the possibilities for personal computers and how they could change society. I had this idea to sell the products directly to the users over the phone”, he said. College plans and his parents’ expectations bothered him a lot. But Michael Dell was determined. He drove off to the University of Texas at Austin in August 1983 in a car he’d bought with earnings from selling newspapers. He was surprised that his mother wasn’t suspicious about the three computers in the backseat. By November, news reached his parents that he wasn’t attending classes. On a surprise visit to Austin, they caught their son on spot. Michael Dell told his dad that he wanted to compete with IBM. Although Michael agreed to focus on his studies, the business chances and the timing couldn’t have been better. The public was becoming more interested in computers, but no one was producing them. In early May, a week before his final exams, Michael started Dell computer Corporation with $1,000. He took his exams, and then dropped out of college at the end of his freshman year. It was time to try out his direct-to-customer business model. “Three years later”, Dell says, “we had already achieved annual sales of about $150 million, I was 22 years old then.” 小题1:What does the underlined word in paragraph 1 mean? A.affect B.develop C.support D.lead 小题2:Which of the following is true according to paragraph 2? A.Dell discovered a good chance to make money B.Dell could buy a computer at one-fourth the price C.IBM made little money from personal computers D.Dell rebuilt computers in a mechanic’s shop 小题3:When Dell’s parents learned about his absence from class, they . A.tried to help with his business B.were too suspicious to accept it C.wanted him to go hack to class D.encouraged him to compete with IBM 小题4:It can be inferred from the article that . A.Dell was tired of his college life B.Dell was not devoted to his study at college C.Dell’s college life helped him greatly D.Dell didn’t finish his final exams 小题5:Dell’s experiences show that . A.determination and opportunity lead to success B.family support plays an import in one’s success C.there’s no need for all of us to go to college D.we should insist on whatever we are doing
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参考答案:
举一反三
【判断题】梯形图编程时,每一逻辑行,并联接点多的电路应排在左面。
A.
正确
B.
错误
【单选题】在动物进化过程中,从水生的无脊椎动物发展到原始的陆生节肢动物可以充分说明生物的进化是(  )
A.
从简单到复杂
B.
从低等到高等
C.
从水生到陆生
D.
从无到有
【简答题】(文科做)已知直线l 1 :mx+ny+4=0,l 2 :(m-1)x+y+n=0,l 1 经过(-1,-1),问l 1 ∥ l 2 是否成立?若成立,求出m,n的值,若不成立,说明理由. (理科做)△ABC的顶点B(3,4),AB边上的高CE所在直线方程为2x+3y-16=0,BC边上的中线AD所在直线方程为2x-3y+1=0,求AC的长.
【单选题】时间是有方向性的,总是从过去向未来流动,这就是时间之箭。在生物进化过程中,时间的过去与未来是不对称的,这是一个不可逆过程。但生物进化的时间箭头与熵增不同。熵增意味着退化,即旧事物的分解和衰亡,而进化是新事物的产生和发展,它的时间箭头是指向熵减少的。因此( )。
A.
生物的进化只有一个方向
B.
生物的演化可分为退化和进化两大类
C.
生物进化过去用的时间短,未来用的时间长
D.
熵的变化是没有方向性的
【简答题】已知平面内点M(-3,2),N(5,-4),l是经过点A(-1,-2)且与MN垂直的直线,动点P(x,y)满足 PM ? PN =-21 . (1)求直线l的方程与动点P的轨迹Σ的方程; (2)在轨迹Σ上任取一点P,求P在直线l右下方的概率.
【简答题】如图,已知抛物线y=x 2 +bx+c和直线y=kx经过点A(-1,-1)和B(4,4) (1)求直线AB和抛物线的解析式; (2)直线x=m( )与抛物线交于点M,与直线AB交于点N,与x轴交于点P,求线段MN的长(用含m的代数式表示); (3)在条件(2)的情况下,连接OM、BM,是否存在m的值,使△BOM的面积S最大?若存在,请求出m的值,若不存在,请说明理由。
【简答题】在动物进化过程中,从 __________ 动物开始出现中胚层,从 __________ 动物开始出现真体腔。
【单选题】生物的进化历经了从简单到复杂,从水生到陆生的过程.在动物的进化历程中,最早成为真正陆生脊椎动物的是(  )
A.
鱼类
B.
两栖类
C.
爬行类
D.
哺乳类
【简答题】在动物进化过程中 , 从 ( ) 动物开始出现中胚层 , 从 ( ) 动物开始出现真体腔。
【简答题】已知点 P(-l,2m-l)在经过 M(2,-1),N(-3,4)两点的直线上,则m= .
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