如图所示是蹦极运动的简化示意图.弹性绳一端固定在O点,另一端系住运动员;运动员从O点自由下落,到A点处时弹性绳自然伸直,B点是运动员受到的重力与弹性绳对运动员拉力相等的点,C点是蹦极运动员到达的最低点(忽略空气阻力),下列说法正确的是( )
听音,圈出你所听到的单词。 (1)A.cheeseB.Chinese C.cheers (2)A.wantB.wait C.wear (3)A.ranB.canC.won (4)A.fifteenB.sixteenC.seventeen (5)A.backB.box C.bottle (6)A. homework B. homeC. hurry
—______ you play computer games? —Yes. Now many children play computer games at the weekend. A. Are B. Can C. /
—You are good _____ swimming. Do you want to be _______ our school swimming team? —Yes, I do. A. at, in B. for, on C. at, of
—Can your father run fast? —He ran fast in the past, but now he is _______ . A. high B. well C. slow
—___________________? —Yes, I do. But I don’t play well. A. Can you jump high B. Is this crayon Amy’s C. Do you want to be in our basketball team