关于合理设计作业中用力方法的说法，正确的是（）。
A.利用人体的活动特点可以获得力量和准确性
B.合理安排负荷就是追求低负荷
C.应尽量提高动作能级
D.不必考虑不同体位的用力特点
参考答案：A
解析：合理设计作业中的用力方法包括：①合理安排负荷，并非单纯追求低负荷；②按生物力学原理，把力用到完成某一操作动作的做功上去，避免浪费体力；③利用人体活动特点获得力量和准确性；④利用人体的动作经济原则，即保持动作自然、对称、有节奏；⑤降低动作能级；⑥充分考虑不同体位的用力特点。
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| Tina and Tara are sisters. They are the __1 in some ways, but different in other ways. _2_ Tina and Tara are thin with short hair. They are both outgoing and popular, _3_ . Tina is much __4_ than Tara. She plays basketball and volleyball. And she enjoys __5_ sports on TV. Tara is older and smarter __6_ Tina . She is _7_ serious. She likes reading very much. And she likes to talk about the things she reads .Tara likes to watch sports, too. But she doesn't _8_ them. Both sisters like school and study _9_ .But Tara is more serious about her homework.Both of them also like to go shopping and 10_ computer games. | |||
| ( ) 1. A. different ( ) 2. A. All ( ) 3. A .also ( ) 4. A .athletic ( ) 5. A .watching ( ) 6. A. of ( ) 7. A. much ( ) 8. A. watch ( ) 9. A .well ( ) 10. A .play | B. outgoing B. Both B. very much B .more athletic B. seeing B. than B. many B. listen to B. good B. plays | C. same C. Two C. so C. thinner C. looking C. to C. most C. play C. bad C. work | D. popular D. Also D. too D. outgoing D. reading D. for D. more D. see D. better D. works |