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【多选题】
华尔街日报一个专栏曾经发表了这样一个观点:如果对中国输美纺织品征收关税,对美国消费者是有利的。原因是:关税导致纺织品价格上升,价格上升促使美国消费者减少购买,从而导致纺织品价格再下降,因此对美国消费者有利。这个逻辑显然荒谬。那么它错在哪里呢?理论开始显示它的威力:人们根据经济学理论提出了各种批评,指出其中的漏洞。请问下面哪些批评说法是对的?
A.
华尔街日报的评论错误在于提出了这样的逻辑:需求变化带来价格变化,价格变化带来需求变化,需求变化再带来价格变化。正确的逻辑是:需求变化(或供给变化)带来价格变化,价格变化带来的是需求量变化,而需求量的变化不会引起价格变化
B.
消费者减少购买导致的价格下降程度不可能超过关税导致的价格上升程度
C.
关 税导致的价格上升已经是一个均衡,此时价格上升和由此引起的需求量减少已经达到均衡,因此不再改变变
D.
华尔街日报的评论,混淆了需求的变动与需求量的变动价格以外的因素影响,需求的变化,这种变化会带来价格变化,但是,因关税而带来的价格上涨带来的是需求量的减少,需求量的减少不会反过来影响价格
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【简答题】If there is only an expiry date in the L/C without a shipment date,the expiry date is regarded as the latest shipment date.( )
【单选题】If the L/C stipulate that the expiry date is July 31st without a shipment date, then the latest shipment date is also July 31 st. ( )
A.
正确
B.
错误
【单选题】According to the text, telomeres_____________- .
A.
can make a cell die quickly
B.
can help prevent DNA from separating
C.
become shorter before they die
D.
are at the ends of people’s chromosomes
【判断题】麻栎群植于风景林中,秋天叶色金黄,季相变化明显。
A.
正确
B.
错误
【单选题】A drug that inhibits DNA replication, but is inactivated by chromosomes containing telomeres, would prove to be a very useful antibiotic. Telomeres can be best described by which one of the following?
A.
Telomeres are only present in circular chromosomes.
B.
Before telomerase action, and after DNA replication, there is a 3 ′ overhang of the newly synthesized strand.
C.
Before telomerase action, and after DNA replication, there is a 5 ′ overhang of the strand being replicated.
D.
In human DNA, telomeres consist of repeating sequences of TTAGGT.
【简答题】Telomeres
【简答题】If the L/C simply stipulates an expiry date without a shipment date,it means that( ).
【简答题】telomeres
【简答题】telomeres & Telomerase
【简答题】we【L18】______if we urge changes in national policy without
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