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【简答题】
已知 1 2×3 = 1 2 - 1 3 , 1 3×4 = 1 3 - 1 4 ,…计算: 1 2×3 + 1 3×4 + 1 4×5 + 1 5×6 .
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举一反三
【单选题】There is a general understanding among the members of the Board of Directors that chief attention ______ to the undertaking that is expected to bring in highest profit.
A.
is given
B.
gives
C.
should be given
D.
must be given
【单选题】In general, no business wants to ____ its image because it usually results in loss of profit.
A.
spiol
B.
spoil
C.
spilo
D.
spoils
【判断题】你认真听课了吗?
A.
正确
B.
错误
【简答题】如果要学 汉语,就得认真听课 如果要学 汉语,就得认真听课。 你看 保罗了吗? 今天听写,你有两个字写 了。 我已经准备 了,咱们出发吧。 已经十点了,可是我的作业还没写 。 超市里的水果都卖 了。 雨不下了,把窗户打____。 等我把作业做____了,咱们再去看电影。 这个练习不难,我们都做____了。 A:你听 了吗? B:我听 了,可是我没听 。
【简答题】同学们,今天的填空全部来自于刚刚所学的内容,你认真听课了吗?赶快填一填吧! 过年的时候吃年糕,寓意( ) 儿童骑象手持如意,寓意( ) 过年的时候吃鱼,寓意( ) 建筑上雕刻蝙蝠,寓意( ) 春节前倒贴福字,寓意( )
【判断题】诗的目的就是把善跟美区别开来,发掘恶中之美。
A.
正确
B.
错误
【单选题】目前临床应用的氟喹诺酮类药物中对革兰氏阴性杆菌体外抗菌活性最强的是
A.
吡哌酸
B.
氟哌酸
C.
环丙沙星
D.
氧氟沙星
E.
诺氟沙星
【单选题】The profit of the general contractor is realized through the difference between the () and the construction costs, including management and overhead costs
A.
Total price
B.
Price adjustment
C.
lump-sum contract
D.
fixed price
【单选题】There is a general understanding among the members of the company that chief attention ____ to the effort which is expected to bring highest profit.
A.
is given
B.
gives
C.
should be given
D.
must be given
【单选题】As a general rule, profit-maximizing producers in a competitive market produce output at a point where
A.
marginal cost is increasing.
B.
marginal cost is decreasing.
C.
marginal revenue is increasing.
D.
price is less than marginal revenue.
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