英语论文网

n/n.美沙酮，美散痛
注释：
1. the best will：最好的愿望
2. if the worst comes to theworst：如果最最糟糕的事情发生了。这是英式英语的用法，在美式英语中它说成if worst comes to worst。在不同的语境中，有不同的泽法，如：“If the worst comes to the worst，”Becky thought，“my retreat“secure;and l have the right- hand seat inthe barouche.”蓓墓想道：“逼到最后一条路，逃难是不怕的了，在他的大马车里，我稳稳地有一个位子了。”又如：Ifthe worst comes to the worst，we’ll sell the car.大不了我们把车卖了。
3. scientists still have a few tricks叩their sleeves：科学家们仍然有些不为人所知的招数。 have something up one’s sleeve是英语成语，意思是：to have a secret idea or plan，有锦囊妙计，有所保留的，秘而不宣的谋略或计划，例如：If this trip doesn’t work out I’ve still got a few ideas up my sleeve.
4. methadone：美沙酮，一种有效的合成麻醉药，它不像口马啡或海洛因那样容易汁人上瘾，在戒毒治疗中被用作这些毒品的替代品。
练习:
1. According to the first two paragraphs，the author thinks that
A strong measures have been taken by the government to prevent global warming.
B to reduce carbon emissions is all impossible mission.
C despite the difficulty，scientists have some options to prevent global warming.
D actions suggested by scientists will never be realized.
2. Scientists resist talking about their options because they don't want people to
A know what they are doing.
B feel their efforts are useless.
C think the problem has been solved.
D see the real problem.
3. What does Stephen Schneider say about a heroin addict and methadone?
A Methadone is an effective way to treat a hard heroin addict.
B Methadone is not a correct way to treat a heroin addict.
C Hospitalization together with methadone can work effectively with a heroin addict.
D Methadone and heroin are equally effective in treating a heroin addict.
4. What is Stephen Schneider’s idea of preventing global warming?
A To ask governments to take stronger measures;
B To increase the sunlight reaching the Earth.
C To apply sunscreen to the Earth.
D To decrease greenhouse gases.
5. What is NOT true of the effectiveness of “sunscreen”，according to the last paragraph?
A It deflects sunlight reaching the Earth to counteract the warming.
B It blocks the incident energy in the sun’s rays.
C It is a controversial method.
D It decreases greenhouse gases in the atmosphere.
五、补全短文
Watching Microcurrents Flow
We can now watch electricity as it'flows through even the tiniest circuits. By scanning(扫描) the magnetic field(磁场) generated as electric currents flow through objects(物体), physicists have managed___(1)___ .The technology will allow manufacturers to scan microchips for faults, as well as revealing microscopic defects in anything from aircraft to banknotes.
Gang Xiao and Ben Schrag at Brown University in Providence, Rhode Island, visualize thecurrent by measuring subtle(细微的) changes in the magnetic field of an object and __(2)__.
Their sensor is adapted~ from an existing piece(现有配件) of technology that is used to measure large magnetic fields in computer hard drives.2 "We redesigned the magnetic sensor to make it capable of measuring (测量)very weak changes in magnetic fields," says Xiao.
The resulting device is capable of detecting(测定) a current as weak as 10 microamperes, even when the wire is buried deep within a chip, and it shows up features (图案)as small as 40 nanometres across.
At present, engineers looking for defects(缺陷) in a chip have to peel off(剥开) the layers and examine the circuits visually; this is one of the obstacles _(3). But the new magneticmicroscope is sensitive enough to look inside chi