转录的不对称性是指在RNA的合成中,DNA的二条链中仅有一条链可作为转录的模板,称为

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问题:

转录的不对称性是指在RNA的合成中,DNA的二条链中仅有一条链可作为转录的模板,称为转录的不对称性。与mRNA序列相同的那条DNA链称为();将另一条根据碱基互补原则指导mRNA合成的DNA链称为()。

考点:分子生物学分子生物学综合练习分子生物学综合练习题库
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哪一项不是引起萎缩的原因

A.肾盂积水

B.幽门狭窄

C.垂体功能低下

D.四氯化碳中毒

E.慢性肝淤血

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Just how far does the euro(欧元) have to fall before Europe actually becomes reasonable?

Anyone traveling to the old continent from the U.S. in recent years has learned the hard way how expensive it is. The situation has improved in the last couple of months, thanks to the Greek financial crisis. But it still has a way to go.

Alarm about Greece—and other financially unstable countries in Europe—has dragged down the euro sharply. In November, before the crisis struck, you needed about $1.49 to buy one euro. Today you need only about $1.36. That's a 9% cut.

What does that mean for you, the would-be traveler? It's a big sale.

As recently as November, when the euro was flying high, the OECD estimated that countries like France, Italy and Germany were about a third more expensive than the U.S. Not all European countries were quite as expensive for the American visitor: Greece only cost about 17% more than the US, while the Czech Republic (which is not part of the eurozone) was actually about 15% cheaper than back home.

Fast-forward two months, and the situation looks somewhat better.

At current exchange rates, places like France will still cost you about 23% more than the U.S., but cheaper countries such as Spain and Greece are now only about 6% more expensive. The Czech Republic's a fifth cheaper than the U.S.

European prices will only break even(持平) with the U.S. if the euro falls to about $1.10, says the OECD. But is it going to get there?

Greece's financial crisis may or may not be over. Members of a labor union just occupied part of the finance ministry to protest against the planned austerity(紧缩) measures. No, it doesn't inspire confidence!

Julian Jessop, chief international economist at the Capital Economics consultancy in London, sees the euro falling to $1.25 by year-end. “We still think the euro should be a lot lower,” he says. “We think the outlook for the European economy is a lot worse than for the U.S. And Greece is only a symptom of a wider problem: Does the eurozone make sense as a currency union?” If he's right, you may want to wait to change your money or book a trip.

67.   In the passage the writer offers some suggestions to the travellers from______.

A.USA           B.Europe             C.Greece             D.China

68.   The underlined word “it” in the passage refers to ______.

A.the planned austerity measures

B.Greece’s financial crisis

C.the protest from a labor union

D.the decline of the euro in value

69.   Julian Jessop has a negative attitude toward the euro because he thinks ______.

A.Greece’s financial crisis may not be over

B.the euro will drop to $ 1.25 by the end of the year

C.the European economy is a lot worse than the US’

D.the other European countries have a similar problem like Greece

70.   The purpose of the author writing the passage is to tell the readers that ______.

A.the euro shall be further reasonably lowered

B.travelers to Europe will save less in the future

C.the economic situation in Europe is worsening

D.the Greek financial crisis influences the whole Europe

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下列过程中需要吸收能量的是                                        (    )

A.O2→2O

B.H2+Cl2→2HCl

C.Na2O+H2O="2NaOH"

D.2Cl→Cl2

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《西游记》是我国著名的神话小说,其中塑造出的一系列栩栩如生的文学形象,如孙悟空、猪八戒以及牛魔王等,都给人们留下了很深的印象。但这些神话形象都可以从人们的生活实践中找到各自的影子。如果人们在实践中根本就没有遇见过猴、猪与牛等动物,作者吴承恩是无论如何也不可能把这些形象描绘出来的。这说明[ ]

A、文化是对神的描绘

B、文化是神的恩赐

C、文化是社会实践的产物

D、文化是动物的反映

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一项目FSC认证木材价值$150000,生产和加工购买80miles之内,该木材贡献MR建筑公开和优化-原材料源头多少价值()。

A.$300000

B.$200000

C.$0

D.$150000

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