Volcanic eruptions have the earth’s land surface. They may also have produced the atmosphere and------------.
Volcanoes have not only made the continents ,they are also thought to have made the world’s first stable atmosphere and provided all the water for the oceans, rivers, and ice-caps. （423）
break up and grind into powder
5…………
(e.g. cotton, asbestos) Catalysts Ammonia Formaldehyde stage two resin 6…………
other substances were then introduced: including fillers, such as woodflour, asbestos or cotton, which increase strength and moisture resistance, catalysts (substances to speed up the reaction between two chemicals without joining to either) and hexa, a compound of ammonia and formaldehyde which supplied the additional formaldehyde necessary to
转折逻辑关系
Day length is a useful cue for breeding in areas where ……………. are unpredictable。543
Day length is an excellent cue, because it provides a perfectly predictable pattern of change within the year. In the temperate zone in spring, temperatures fluctuate greatly day to day, but day length increases steadily by a predictable amount.
21___________ whales and 22____________ whales
yes
Song-like
Notable exceptions are the nearly song-like choruses of bowhead whales in summer and the complex, haunting utterances of the humpback whales.
For thousands of years they had to rely on catching 34________and________as a means of sustenance.
Humans first settled in the Arctic a mere 4,500 years ago, surviving by exploiting sea mammals and fish. 613
Objects age in accordance with principles of 33_______and of 34 ________.
It is always the basic material which constitutes the object and which, in the natural course of things, is worn down and becomes ‘older’. Ageing in this case must occur according to the laws of physical chemistry and thermodynamics.833
Bottlenose dolphin
Yes
Exceptional in…….and in air-water interface
The bottlenose dolphin has extremely keen vision in water. Judging from the way it watches and tracks airborne flying fish, it can apparently see fairly well through the air-water interface as well. 412
form a thermosetting resin. 521
There were several reasons for the research into plastics in the nineteenth century, among them the great advances that had been made in the field of 3_____ and the search for alternatives to natural resources like ivory. 521
The radioactive material stocked in Paris contributed to the discoveries in the 1930s of the ________and of what was known as artificial radioactivity. The existence in Paris at the Radium Institute of a stock of 15 grams of radium made a decisive contribution to the success of the experiments undertaken in the years around 1930. This work prepared the way for the discovery of the neutron by sir James Chadwick and, above all, for the discovery in 1934 by Irene and Frederic Joliot Curie of artificial radioactivity.
Playground supervision will be more effective if members of staff are trained to recognize the difference between bullying and .
one helpful step is to train lunchtime supervisors to distinguish bullying from playful fighting, and help them break up conflicts. Another possibility is to improve the playground environment, so that pupils are less likely to be led into bullying from boredom or frustration. (643)
The territory of Nunavut consists of little more than ice, rock and a few……….
Nunavut is 1.9 million square kilometers of rock and ice, and a handful of islands around the North pole. 613
雅思阅读
四大逻辑关系
并列逻辑关系
转折逻辑关系
比较逻辑关系
因果逻辑关系
并列逻辑关系
例题
In Britain moreover, scientists worried
that English had neither the 30 ________ nor the 31
_______ to exprie Curie saw the importance of collecting radioactive material both for research and for cases of__________.
One of Marie Curie’s outstanding achievements was to understood the need to accumulate intense radioactive sources, not only to treat illness but also maintain an abundant supply for research.
First, it lacked the necessary technical vocabulary. Second, it lacked the grammatical resources required to represent the world in an objective and impersonal way, and to discuss the relations, such as cause and effect, that might hold between complex and hypothetical entities.(511)
Positive results could be produced by factors such as34…………..or 35…………… ……..there were many other ways of getting positive results. These ranged from ‘sensory leakage’— leakage ’—where clues about the pictures accidentally reach the receiver— to outright fraud. (813)