题目

如图，平行板电容器的两个极板与水平地面成一角度，两极板与一直流电源相连。若一带电粒子恰能沿图中所示水平直线通过电容器，则在此过程中，该粒子 A.所受重力与电场力平衡 B.电势能逐渐增加 C.动能逐渐增加 D.做匀变速直线运动   答案：BDEvery time an election rolls around，people want to know what each candidate’s stance(立场)is on the issue that are important to them．In deciding which candidate 1 want to vote for, there are two main issues for me：the economy and education．These issues are important to me because they affect me the most right now．The economy affects everyone，and education is important because t am about to enter college． When I looked at how each candidate views these issues，one man stood out to me，and that is Democratic candidate Barack Obama．I like a11 of Senator Obama’s ideas for improving the economy．He wants to bring the troops home from Iraq，thereby saving the $12 billion we spend there every month．Another point that Obama makes is that the United States’ current energy policy is hurting the economy. He believes that if new energy bills are passed，it will help tile U．S．  get out of its currenr economic slump，and I agree．With these ideas and strategies，I strongly believe that Obama can improve the current state of the economy．Obama also has a plan to improve education．He believes that we need to start educating children at a young age．He also hopes to close the gap of achievement between students, which means improving schools that need help．He wants to pay teachers more and treat them like professionals，but in exchange he calls for higher responsibility．Obama also has a plan to make college more affordable．He wants public colleges to be free for students who maintain a ”B” average during high school．And he plans to give a $4，000 tax credit for college and university students who complete 100 hours of community service each year I believe these ideas to improve education are good enough and will help many students．Therefore，there is no longer any doubt in my mind who will be receiving my vote：Barack Obama．66．According to the passage，if a candidate wants to win the election he must         A．care more about the education in the U．S．B．issue plans trying to satisfy everyoneC．make college more affordableD．narrow the gap of achievement between students67．We may learn from the passage that the author is a(n)              ．A．college student    B．economist      C．senior high student    D．candidate68．What interests the author most in Obama’s stance is          ．A．economy and education                 B．the military and educationC．foreign affairs and education           D．the military and economy69．Which of the following are among Obama’s promises?a．to bring troops home from Iraq             b．to reduce income taxc．to start early education                         d．to develop American economye．to offer free college education for all         f．to pass new energy billsA．a，b，c，d，e，f    B．a，b，c，d，e     C．a，c，d，f     D．c，d，e，f70．What’s the main idea of the passage?A．American economy should develop quicklyB．Obama’s new life as presidentC．How to win an electionD．Why I vote for Obama