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提问人：网友sizilove 发布时间：2022-01-07

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What role does nacre play in the formation of pearls？A．It provides the nucleus around whic

What role does nacre play in the formation of pearls？

A．It provides the nucleus around which a natural pearl develops.

B．It is a calcium coating that protects the outside of the oyster's shell.

C．It penetrates the membrane covering the oyster's soft body.

D．It is the luminous substance that forms the pearl's outer layers.

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更多“What role does nacre play in the formation of pearls？A．It provides the nucleus around whic”相关的问题

第1题

What roles did groomsmen play in the weddings in the past? ( )

A、Groomsmen served as helpers to help the groom to kidnap or steal a bride.

B、Groomsmen helped to protect the bride from being kidnapped or stolen by other people.

C、Both A and B.

D、Neither A nor B.

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第2题

What does the order “Midships” mean?

A、Reduce swing as rapidly as possible.

B、Rudder to be held in the forward and aft position.

C、No more steering is needed.

D、Operation of engines is no longer required.

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第3题

In the context of international marketing, the first step in managing a sales force is making a decision regarding its design.

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第4题

What word MOST NEARLY means:A short amusing or interesting story about a real incident or person.?

A、intricate

B、evade

C、anecdote

D、sober

E、compatible

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第5题

According to the findings, who has low tolerance for female bosses?

A、Men

B、Women

C、Both of them

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第6题

Listen to the conversation and fill in the blanks.对话音频链接 So Ella do you think online shopping and E-commerce will cause the supermarket and shopping _________ to disappear?

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第7题

_______________, even if in my hometown, when I visit other cities, all the shops are closing down. And even if the shops are closing down, their online shops still seems to be open. So I think today the money is really buying online and not buying in stores.

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第8题

I think it's a ____________, because it is great sometimes you know you can _______ into local shop, ______ into any store and get all you want.

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第9题

I really think online shopping and shopping in person can't __________.

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