A team ofresearchersmadean 11-day expedition to the Bahamas, 2007. On the expedition, the researchers used a deep-diving submersible to drop off and pick up aspecialcamerasystemcalledthe Eye-in-the-Sea (EITS). Thesystemhas a video camera inside a water-proofcase. The camerasits ona metaltripodthatis about 6 feet tall. It films with red light, which most deep-sea animals can't see, so they don't get scared away.

One of the biggest advantages of EITS is that it allows researchers to see how deep-sea creatures communicate with one another — using a type of light called biolumi-nescence.

Bioluminescent creatures use chemicals to make their ownlight. Thoughonlyavery fewanimals, suchas fireflies, doit abovewater, mostanimalsin the ocean bioluminesce.

Scientists believe that sea creatures use this light for everything from scaring away predators to finding food in dark waters. EITS alsohasa gadgeton thefront that lights up to look just like bioluminescence.

Ontheexpedition, scientistsprogrammedthelight system to flash in different patterns. They were ecstatic to find that when the lure flashed in certain ways, some animals flashed back.

Thoseflashesshowedthatforthefirsttime, thescientists were actually "talking" to deep-sea creatures using light.

探海之眼

2007年，有一組研究人員到巴哈馬群島進(jìn)行了11天的遠(yuǎn)征考察。在這次考察過程中，研究人員使用了一種能夠潛得很深的深潛艇，把一套叫做“探海之眼”（EITS）的特制攝像設(shè)備投放到海里攝像后收回。這套設(shè)備擁有一個放在防水箱里的攝像機(jī)。這臺攝像機(jī)安放在一個6英尺（1英尺=0.3048米）左右高的金屬三腳架上。它利用多數(shù)深海動物看不見的紅光進(jìn)行攝像，這樣就不至于把它們嚇跑。

EITS最大的優(yōu)點(diǎn)之一是它能使研究人員利用一種叫做生物發(fā)光的現(xiàn)象看到深海中的生物相互之間是怎樣交流的。

具有發(fā)光能力的生物是利用化學(xué)物質(zhì)發(fā)光的。盡管能夠在水面以上發(fā)光的動物（如螢火蟲）為數(shù)極少，然而在海洋中的大多數(shù)動物都會進(jìn)行生物發(fā)光。

科學(xué)家認(rèn)為，這種發(fā)光能力對海洋生物可以起到許多作用，從嚇退捕食動物到在黑暗的水域里尋找食物。EITS的前部也有一個會發(fā)光的小器件，發(fā)出的光看上去就像生物發(fā)光一模一樣。

在這次考察過程中，科學(xué)家們給這個發(fā)光設(shè)備編制的程序能使它發(fā)出各種不同形式的光。他們欣喜若狂地發(fā)現(xiàn)：當(dāng)他們發(fā)出的引誘光以某些方式閃爍時，有些動物會回閃。

這些閃光表明，科學(xué)家們利用發(fā)光第一次真正與深海生物實現(xiàn)了“對話”。

（注意斜體詞的譯法）

BuriedMetal AffectsLondonCityAirport

Aircraftstakingoff fromLondon City Airport havehadtheircompasses affectedbyironandsteelburiedbelowtherunway, leadingto(1) s ___ navigation problems. The main culprit is recycled oil pipelines used as steel casing on concrete piles that underpin the holding area where (2) a_____ prepare for take-off, as well as buried railway lines and bollards, the Air Accidents Investigation Branch (AAIB) said.

The AAIB issued six safety recommendations, (A) i ______ that the steel casing be removed and pilots flying to/from London City Airport be routinely reminded inflight plansthere isa magneticanomaly which can affecttheir aircraft's instruments.

The movesfollowan AAIBinquiry intoan incidenton October 31, 2006 when a Raytheon Hawker 800XP experienced difficulties navigating after (B) t____ off from the airport and had to return. The incident was one in a series of navigation (3) p____ dating from January 2000 for aircraft leaving London City Airport. Some were attributed to pilot error at the time.

"A walk aroundtheRunway 28holdingareawithahand-held (4) m____ ompass by an AAIB inspector showed that there were some large and strong magneticanomaliesthatmadethecompass needle （5） d____ by upto±60 degrees." the AAIB said.

Scientists called in to the airport, which is on the site of old docks in east London, found major magnetic anomalies from the steel (C) c_____, and a lesser effect from old railway (6) l andcast iron bollardsthat wereusedtotie upships. These were covered over during (D) c____ of the airport.

(A, B, C, D FOR CROSS, 1, 2, 3，4,5,6 FOR DOWN. Thefirst lettersoftheabsents were given)

The Lamp Bulb Without Electricity

Xiao Wang was the preservation memberof chemical engineering factory, turning on duty in the evening for a day. Suddenly it had a power fail. All sides were utterdarkness, so Xiao Wang was very frightened. At this time the technician in the factory, Xiao Lee, went to take something infactory, seeing Xiao Wang, who didn'tknow howtodo. So he told him a method. Put into just the right amount of magnesium in a discard lamp bulb, then tilt to one side to put into the oil of vitriol. Keep the oil of vitriol and magnesium not to get in touch with each other while starting. Straightenthelamp bulb after covering tightly. Then Xiao Wang saw that it taken place vigorous of chemical reaction in the lampbulb atthis time. The lamp bulb sends out very dazzling ray of light, make the room get up bright again.

As all we know, the oil of vitriol has strong oxidizability, especially with some metals. The magnesium is aactivemetal. So iftheymeet together, they will take place violent chemical reaction.

Question:

1. Please write down the chemical reaction equation.

2. Why can the reaction send out dazzling ray of light?

上期Reading

Comprehension答案

1. D2. B 3. A