科学家不应当把想象力让诗人独占了。（exclusive use of)

听力原文： Good morning. This morning we are continuing our look at Australia and its natural problems. Actually dryness, or aridity, as it is generally called by geographers, is probably the most challenging of Australia's natural problems and so it is very important in this course for you to have a good understanding of the subject. For Australia, water is a precious resource and its wise management is of the greatest importance.

As I have said, Australia is a dry continent, second only to Antarctica in its lack of rainfall. Long hours of hot sunshine and searing winds give Australia an extremely high rate of evaporation, far more than in most other countries. It is estimated that approximately 87% of Australia's rainfall is lost through evaporation, compared with just over 60% in Europe and Africa and 48% in North America. You generally think of many parts of Australia standing water, that is dams, puddles and so forth, dry up rapidly and some rainfall barely penetrates the soil. The reason for this is that thirsty plants absorb the moisture.

Some parts of Australia are dry because rainwater seeps quickly through sandy soil and into the rock below. In parts of Australia this water, which seeps through the sandy soils collects underground to form. underground lakes. Water from these subterranean lakes can be pumped to the surface and lapped and so used for various purposes above the ground. In fact, extensive underground water is too salty to be used for human consumption or for the irrigation of crops. However, most inland farmers do rely on this water for watering their animal and, where possible, to a lesser extent for irrigation.

Underground water can flow very large distances and can be kept in underground reservoirs for a very long time. Water from these underground bubbles to the surface as springs in some parts of the country, and there rare sources of permanent water were vital to early explorers of island Australia, and to other pioneers last century, who used the springs for survival. But in many places levels have fallen drastically through continuous use over the year. This has necessitated the pumping of the water to the surface. Remarkably, underground water sources in Australia supply about 18% of total water consumption. So you can see it is quite an important source of water in this dry land.

So most of the consumption of water in Australia comes from water which is kept above ground. More than 300 dams regulate river flows around the country. The dams store water for a variety of function, the rural irrigation of crops, without which many productive areas of the country would not be able to be farmed ; the regulation of flooding, a serious problem which will be dealt with later in the course; and last but not least, the harnessing of the force of gravity for the generation of electricity. That is all we have for this morning, but you will be able to do further study on this important area in the interested, please come up to the desk and take a copy.

Australia is【21】driest continent in this world. The evaporation rate of rainfall in Australia is【22】.

The reason for rapid drying-up of water and bare penetrating of the soil of rainfall is that the moisture is absorbed by.【23】

In sandy soils rainwater can【24】

Water is mainly pumped up for【25】

Natural springs are located in some parts【26】

Underground water supplies about 18% of the【27】

The dams store water for a variety of functions:

the rural irrigation【28】

the regulation【29】

the generation【30】

(21)

My second is in BOIL but not in BAKE

My third is in ROCK and also in ROLL

My fourth is in WINDOW but not in POLE

My last is in BASIN but not in BATH

I do tricks to make children laugh.

What am I？

It is astonishing how little is known about the working of the mind. But however little or much is known, it is fairly clear that the model of the logic-machine is not only wrong but mischievous. There are people who profess to believe that man can live by logic alone. If only they say, men developed their reason, looked at all situations and dilemmas logically, and proceeded to devise rational solutions, all human problems would be solved. Be reasonable. Think logically. Act rationally. This line of thought is very persuasive, not to say seductive. (81) It is astonishing, however, how frequently the people most fanatically devoted to logic and reason, to a cold review of the "facts" and a calculated construction of the truth, turn out not only to be terribly emotional in argumentation, but obstinate any " truth" is " proved"--deeply committed to emotional positions that prove rock--resistible to the most massive accumulation of unsympathetic facts and proofs.

(82) If man's mind cannot be turned into a logic-machine, neither can it function properly as a great emotional sponge, to be squeezed at will. All of us have known people who gush as a general response to life--who gush in seeing a sunset, who gush in reading a book, who gush in meeting a friend. They may seem to live by emotion alone, but their constant gushing is a disguise for absence of genuine feeling, a torrent rushing to fill a vacuum. It is not uncommon to find beneath the gush a cold, analytic mind that is astonishing in its meticulousness and ruthless in its calculation.

Somewhere between machine and sponge lies the reality of the mind--a blend of reason and emotion, of actuality and imagination, of fact and feeling. (83) The entanglement is so complete, the mixture so thoroughly mixed, that it is probably impossible to achieve pure reason or pure emotion, at least for any sustained period of time.

(84) It is probably best to assume that all our reasoning is fused with our emotional commitments and beliefs, all our thoughts colored by feelings that lie deep within our psyches. Moreover, it is probably best to assume that this stream of emotion is not a poison, not even a taint, but is a positive life-source, a stream of psychic energy that animates and vitalizes our entire thought process. (85) The roots of reason are embedded in feelings--feelings that have formed and accumulated and developed over a lifetime of personality-shaping. These feelings are not for occasional using but are inescapable. To know what we think, we must know how we feel. It is feeling that shapes belief and forms opinion. It is feeling that directs the strategy of argument. It is our feelings, then, with which we must come to honorable terms.

(81)