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[单选题]

_____ we got to the station, the train had left already.

A.When

B.Unless

C.Since

D.If

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更多“_____ we got to the station, the train had left already.”相关的问题

第1题

Sally cant have written tome, or____the letter by now.
A.I'll get

B.I'll have got

C.I'd have got

D.I'd get

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第2题

A: Julia said she sent you a birthday card yesterday、Have you got it? B:Oh, really !
I haven' t _______my mailbox yet.

A、examined

B、charged

C、tested

D、checked

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第3题

Student A:I feel sick.Student B:______Student A:I'm not sure,but I have got a bad headache.

A: I'm sorry to hear that.

B: How are you feeling now?

C: How long have you been sick?

D: Do you have a temperature?

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第4题

We should face the challenge _____.

A.confidently

B.confident

C.confidence

D.brave

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第5题

I found it strange ____ we could not understand each other.

A.why

B.how

C.that

D.where

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第6题

We worked hard and completed the task().

A.in the time

B.on the time

C.ahead of time

D.before time

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第7题

We are unable to _____ with your request in your letter dated Jan.25, 2004.

A.conform

B.compose

C.confirm

D.comply

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第8题

We need a recommendation letter from your former employer before we call give you a definite answer.

A.在得到我们的答复之前,你必须向你原来的老板去索要一份证明函。

B.我们给你答复的前提是,你以前的老板愿意向我们提供一份推荐函。

C.我们需要你以前的雇主提供一份推荐函,然后才能给你明确的答复。

D.我们给你的答复是,你向以前的老板索取一份肯定你工作的证明信。

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第9题

2016年大学生物专业英语期末考试英文短文3翻译答案

将英语短文译为中文

3 Self-Powered Nanotech (10分)

Nanosize machines need still tinier power plants

By Zhong Lin Wang

The watchmaker in the 1920s who devised the self-winding wristwatch was on to a great idea: mechanically harvesting energy from the wearer’s moving arm and putting it to work rewinding the watch spring.

Today we are beginning to create extremely small energy harvesters that can supply electrical power to the tiny world of nanoscale devices, where things are measured in billionths of a meter. We call these power plants nanogenerators. The ability to make power on a minuscule scale allows us to think of implantable biosensors that can continuously monitor a patient’s blood glucose level, or autonomous strain sensors for structures such as bridges, or environmental sensors for detecting toxins — all running without the need for replacement batteries. Energy sources are desperately needed for nanorobotics, microelectromechanical systems (MEMS), homeland security and even portable personal electronics. It is hard to imagine all the uses such infinitesimal generators may eventually find.

In Brief

★Nanotechnology has huge potential — but those minuscule devices will need a power source that is better than a battery.

★ Waste energy, in the form. of vibrations or even the human pulse, could provide sufficient power to run such tiny gadgets.

★ Arrays of piezoelectric nanowires could capture and transmit that waste energy to nanodevices.

★ Medical devices will likely be a major application. A pacemaker’s battery could be charged so it would not need replacing, or implanted wireless nanosensors could monitor blood glucose for diabetics.

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第10题

2016年大学生物专业英语期末考试英文短文1翻译答案

1. “The Nobel Prize in Physiology or Medicine 2004”Press Release(15分)

4 October 2004

The Nobel Assemblyat Karolinska Institutet has today decided to award The Nobel Prize in Physiology or Medicine for 2004 jointly toRichard Axel and Linda B. Buckfor their discoveries of "odorant receptors and the organization of the olfactory system"

Summary

The sense of smell long remained the most enigmatic of our senses. The basic principles for recognizing and remembering about 10,000 different odours were not understood. This year's Nobel Laureates in Physiology or Medicine have solved this problem and in a series of pioneering studies clarified how our olfactory system works. They discovered a large gene family, comprised of some 1,000 different genes (three per cent of our genes) that give rise to an equivalent number of olfactory receptor types. These receptors are located on the olfactory receptor cells, which occupy a small area in the upper part of the nasal epithelium and detect the inhaled odorant molecules.

Each olfactory receptor cell possesses only one type of odorant receptor, and each receptor can detect a limited number of odorant substances. Our olfactory receptor cells are therefore highly specialized for a few odours. The cells send thin nerve processes directly to distinct micro domains, glomeruli, in the olfactory bulb, the primary olfactory area of the brain. Receptor cells carrying the same type of receptor send their nerve processes to the same glomerulus. From these micro domains in the olfactory bulb the information is relayed further to other parts of the brain, where the information from several olfactory receptors is combined, forming a pattern. Therefore, we can consciously experience the smell of a lilac flower in the spring and recall this olfactory memory at other times.

Richard Axel, New York, USA, and Linda Buck, Seattle, USA, published the fundamental paper jointly in 1991, in which they described the very large family of about one thousand genes for odorant receptors. Axel and Buck have since worked independent of each other, and they have in several elegant, often parallel, studies clarified the olfactory system, from the molecular level to the organization of the cells.

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