不完全的电子商务或部分电子商务的商务模式是()。
A.水泥+砖块
B.鼠标+水泥
C.现金+产品
D.场地+产品
参考答案:B
Every possible means _______ to prevent the air pollution, but the sky is still not clear.[ ]
A. is used
B. are used
C. has been used
D. have been used
下列选项与下图漫画的哲学寓意最接近的是
①平流无石处,时时有沉沦
②宜将剩勇追穷寇,不可沽名学霸王
③骏马能历险,犁田不如牛
④面壁十年图破壁,难酬蹈海亦英雄
A.①②
B.①③
C.②④
D.③④