2009年3月12日，美国总统奥巴马以伊朗“对美国安全与利益依然构成严重威胁”为由，宣布延长对伊朗的制裁．据此读图完成下题．

如图所示，物体A和B的质量均为m，且分别与跨过定滑轮的轻绳连接（不计绳与滑轮、滑轮与轴之间的摩擦），在用水平变力F拉物体B沿水平方向向右以2m/s的速度作匀速直线运动的过程中，绳子的拉力____物体A的重力（填“＞”“=”“＜”），当α=60°时，则物体A的速度大小____m/s．

          Ms. Zhou               Mr. Li is humorous. They are popular among us students.

顶点在原点，经过圆C：x²+y²﹣2x+2$\sqrt{2}$y=0的圆心且准线与x轴垂直的抛物线方程为____ 

    One day, a lady on a carriage saw a young man walking on the rocky road.1 the young man didn't wear shoes and it seemed that there was 2 wrong with his feet.

    She asked the driver3him up, and said she would pay4 him. Then she asked the young man 5. He said he was going for the nearest sea-port, to offer himself as a sailor.

    Twenty years 6 on the same road, a sea-captain 7 was on a carriage saw an old lady walking along, and he made the driver stop his horses. He pulled up8old lady, saying, “I'll pay the money.”

    After 9 on the carriage, the old lady thanked the captain, “for,” said she, “I am10 poor to pay for a ride now.” The captain said, “I remember, twenty years ago when I was a poor man, near this very place, I 11 a ride on a carriage along the road by a kind lady.” “Ah,” she was 12“I am that lady! But things13with me since then.” “Well”, said the captain, “I have made some money, and have come home to enjoy it. I 14you twenty-five pounds a year if you accept my offer.” The  old lady's eyes were full of tears, and 15accepted the sailor's offer.