Đang chuẩn bị liên kết để tải về tài liệu:
Department reading english 7

Tham khảo tài liệu 'department reading english 7', ngoại ngữ, anh ngữ phổ thông phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | A story B humor C drawing D model 39. The word staple in line 24 is closest in meaning to A regular feature B popular edition C new version D huge success 40. In what order does the author discuss various comic strips in the passage A In alphabetical order by title B In the order in which they were created C According to the newspaper in which they appeared D From most popular to least popular Question 41-50 Every drop of water in the ocean even in the deepest parts responds to the forces that create the tides. No other force that affects the sea is so strong. Compared with the tides the waves created by the wind are surface movements felt no more than a Line hundred fathoms below the surface. The currents also seldom involve more than the 5 upper several hundred fathoms despite their impressive sweep. The tides are a response of the waters of the ocean to the pull of the Moon and the more distant Sun. In theory there is a gravitational attraction between the water and even the outermost star of the universe. In reality however the pull of remote stars is so slight as to be obliterated by the control of the Moon and to a lesser extent the Sun. 10 Just as the Moon rises later each day by fifty minutes on the average so in most places the time of high tide is correspondingly later each day. And as the Moon waxes and wanes in its monthly cycle so the height of the tide varies. The tidal movements are strongest when the Moon is a sliver in the sky and when it is full. These are the highest flood tides and the lowest ebb tides of the lunar month and are called the spring 15 tides. At these times the Sun Moon and Earth are nearly in line and the pull of the two heavenly bodies is added together to bring the water high on the beaches to send its surf upward against the sea cliffs and to draw a high tide into the harbors. Twice each month at the quarters of the Moon when the Sun Moon and Earth lie at the apexes of a triangular configuration and the pull of the Sun and .