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问题 选择题

李明长得像他妈妈，这种现象与细胞结构中的（　　）有关．

A．细胞质

B．细胞膜

C．细胞核

D．细胞壁

答案

细胞核中有染色体，染色体中DNA，DNA上有遗传信息．这些信息其实就是指导和控制细胞中物质和能量变化的一系列指令，也是生物体建造生命大厦的蓝图，这是生物的遗传现象，李明长得像他妈妈，这种现象与细胞结构中的细胞核有关．

故选：C

单项选择题

Questions from 31 to 35 are based on the following passage:The exporter, as drawer of a draft (bill of exchange), hands the draft to his bank, the remitting bank, who in turn forwards it to the buyer through a collecting bank in the buyer’s country. A draft (also called a bill) is a written order to a bank or a customer to pay someone on demand or at a fixed time in the future a certain sum of money. If shipping documents accompany the draft, the collection is called “documentary collection.”Documentary collection falls into two major categories: one is documents against payment(D/P); the other, documents against acceptance (D/A).Documents against payment, as the term suggests, is that the collecting bank will only give the shipping documents representing the title to the goods on the condition that the buyer makes payment.Where the paying arrangement is D/A, the collecting bank will only give the buyer the shipping documents after buyer’s acceptance of the bill drawn on him, i.e. the buyer signs his name on the bill promising to pay the sum when it matures. In return he gets what he needs – the shipping documents.Under D/A, the seller gives up the title to the goods – shipping documents before he gets payment of the goods. Therefore, an exporter must think twice before he accepts such paying arrangement.

In a transaction, if payment is made by collection, then the remitting bank is always located in（ ）.

A．Seller’s country

B．Buyer’s country

C．Either A or B

D．None of the above
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单项选择题

电缆在矿车内应成（）形盘放。

A.O

B.∞

C.U
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