THIS CONVERSATION PROJECT LOOKS PROMISING, BUT IT’S STILL _______.A....

Câu 15: This conversation project looks promising, but it’s still _______.A. in the early stages B. in advance C. understress D. at first sightĐọc kỹ đoạn văn sau và chọn phương án đúng (ứng với A hoặc B, C, D) cho mỗi câu từ 16đến 25.Every drop of water in the ocean, even in the deepest parts, responds to the forces thatcreate the tides. No other force that affects the sea is so strong. Compared with the tides, thewaves created by the wind are surface movements felt no more than a hundred fathomsbelow the surface. The currents also seldom involve more than the upper several hundred5fathoms despite their impressive sweep.The tides are a response of the waters of the ocean to the pull of the Moon and the moredistant Sun. In theory, there is a gravitational attraction between the water and even theoutermost star of the universe. In reality, however, the pull of remote stars is so slight as tobe obliterated by the control of the Moon and, to a lesser extent, the Sun.10Just 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 wanesin its monthly cycle, so the height of the tide varies. The tidal movements are strongestwhen the Moon is a sliver in the sky, and when it is full. These are the highest flood tidesand the lowest ebb tides of the lunar month and are called the spring tides. At these times15the Sun, Moon, and Earth are nearly in line and the pull of the two heavenly bodies is addedtogether 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 ofthe Sun and Moon are opposed, the moderate tidal movements called neap tides occur. Then20the difference between high and low water is less than at any other time during the month.