营销企业营销活动效果的因素有营销可控因素和营销不可控因素,属于营销不可控因素的有()。
A.法律
B.价格
C.渠道
D.经济
E.文化
参考答案:A, D, E
—________ he often go to school by bike?
—No, he ________. [ ]
A. Is; isn't
B. Do; don't
C. Does; does
D. Does; doesn't
执行()命令可以打开查询设计器创建查询。