题目

如图所示的直线是真空中某电场的一条电场线，A、B是这条直线上的两点，一电子以速度vA经过A点向B点运动，经过一段时间后，电子以速度vB经过B点，且vB与vA的方向相反，则 A.A点的场强一定大于B点的场强 B.A点的电势一定低于B点的电势 C.电子在A点的速度一定小于在B点的速度 D.电子在A点的电势能一定小于在B点的电势能  单词拼写（共10小题，每小题1分，满分10分）1.Premier Wen Jiabao s__________ on Sunday that the final ends of the nation's economic growth is toimprove people's well-being2.Chek Lap Kok Airport in Hong Kong is designed to a_____________ 80 million passengers a year.3.It was impossible to r______________ the ink from the tablecloth.4.That plane crash o_______________ only minutes after take-off.5.The invitation was based on her research interests and p______________ experience in the field.6. There wasn't enough e____________ to prove his guilt7. No.1 middle school is s______________ in the north of Handan city.8. It’s time that the government took m____________to reduce carbon dioxide emission.9. He c_________________ bitterly that he had been unfairly treated.10.APEC is the most i____________ forum(论坛) in the Asian-Pacific region and one of the most dynamic organizations for economic cooperation in the world.