底线正手击球的步伐可分为“()式”、“开放式”和“()式”三种。
参考答案:关闭;半开放
任务型阅读(每题2分,共6分)
John is twelve years old. He had a bad cold and coughed day and night. He went to see a doctor .The doctor gave him some cough medicine:
Shake it well before use. Take it three times each day before meal. Not right for children below the age of four. Put it in a cold place. Use it before December1st,2012
Did John have a cough?
______________________________________.
How many times need John take the medicine every day ?
_______________________________________.
Can John take the medicine on January 1st,2013?
适合采用薄利多销的方式增加销售收入的商品是( )。
A.需求缺乏弹性的商品 B.需求富有弹性的商品C.需求单位弹性的商品 D.需求无弹性的商品