【正文】 rn. Again, unlike most parable texts, Expressing Yourself In English does not formally introduce the verb ‘to be’ till Unit 3. One 8) until__ __hint for teachers and students like is that students should not expect 9) alike______to be successful with the examinations offered in the body of the text unless they study outside of class and memorize the dialogue that introduces each unit. In order to keep the price low, the book is paperbind and all pictures and illustrations are in black and white. 10) paperbound The textbook will be acpanied by a workbook to be published later this year.11. Since antiquity, the devastating effects of earthquakes on human lives and property ^encouraged the search for reliable methods of 1) have____earthquake prediction. This challenge remains and contemporary seismologists continue to seek reliable methods for pinpointing ^time, 2) _the_____place and magnitude of individual quakes. One prediction technique involves in an analysis of the recurrence rates of earthquakes as 3) __/______indicators of future seismic activity. Earthquakes are concentrated in certain areas of the world that tectonic plates such as the Pacific Plate, 4) _where____the Eurasian (歐亞的) Plate and the African Plate meet and create fault zones and it is in these areas that seismologists focus their investigations. The plate tectonics model provides other tool for earthquake 5) _another__prediction by calculating the accumulated strain at plate boundaries. When the strain reaches one certain magnitude the pressure must 6) __a______be released and it is therefore hypothesized that in such cases an earthquake is eminent. The search for premonitory phenomena 7) _imminent_has accepted particular attention. In contrast to the ancient Greeks 8) _received__and Romans, who relied on the howling of dogs for a warning 9) __as______sign, modern seismologists have focused on physical evidence for animpending earthquake. Evidence of plate strain can be found by measuringrelative movements in geodetic (大地測量學(xué)) stations, while chemical changes also offer signals for seismologists. Using chemical detection techniques, Professor Ulomov established a link between the rise on 10) __in_____the concentration of radon gas in mineral water in the Tashkent Basin and the subsequent earthquake in 1966. 12. The impact of major construction projects of existing geological 1) _on______features may result in unforeseen and disastrous consequences. This is illustrated by one of the worst dam disasters in the history 2) / which occurred at the Massa Dam on 1 April 1958 only two years after the dam had been opened to international acclaim as one of the great engineering achievements of the 20th century. Designing 3) _Designed_ to supply electricity for the region’s developing industrial sector and for irrigation for the farmers of the arid Lower Massa Basin, the 4) _/________ Massa project had taken seven years to lete. It took mere 5) _only _seven minutes to collapse as an enormous landslide consisted of 6) _consistingover 180 million cubic metres of rock tumbled down the right bank and fell into the reservoir behind the dam wall. The landslide created a 250 metrehigh wave preceded by a pressedair blast which entered the interior workings of the dam, smashed the wall abutments(橋臺) and destroyed all control systems. As the wave poured down the valley, it swept ^three highlevel bridges and obliterated 7) _away_ __the town of Sesai, killing their 1,000 inhabitants. The wave was 8) _its___ __yet 50 metres high when it reached the Kere River over two 9) _still ___kilometres away. The Massa disaster bore a striking resemblance with the Ryshkyk tragedy of 1949 when 500 people had been 10) _to _____killed by a wall of water which had overtopped the dam abutments following a 100,000,000 cubicmetre landslide.