【单选题】关于评价掷实心球技能的描述正确的是
A.
持球:如果双手八字手型呈球状,不空掌心,则为“优良”
B.
预摆:如果双手后引不积极,肘关节弯曲过大,身体不后仰,则为”不通过“
C.
最后用力:如果起跳腿前摆靠摆动腿,两腿屈膝靠近胸,腾空后没成蹲踞姿势,则为“优良”
D.
落地:如果自下而上蹬地、收腹、能用两腿快速蹬伸和腰腹力量,挥臂不迅速,则为“优良”
【单选题】This young man came to the metropolis in ______ of starting his new career.
【多选题】将下列二进制数转换为十六进制数,十六进制数转换为二进制数 (10000000)B= (11001.011)B= (3BD)H= (80.8)H=
【简答题】一、语音知识 1. gentle A. organize B. bargain C. regular D. charge 2. offi c ial A.con c ert B. c entury C. c oast D.o c ean 3. sp are A. f ear B. ear n C. p ear ...
【简答题】根据提示写出正确词汇: 1. exist -________________(n.) 2. religious -__________________(n.) 3. globe- _______________________(adj.) 4. gentle- _____________________(adv.) 5. violence -_________________( 猛烈的 .) 6....
【单选题】The device used to store a charged pressure for a hydraulic starting system is called the ___.