Insert a suitable word in each of the blanks to complete the following passage.
HIBERNATION
Hibernation is the long period of sleep by which many animals pass the winter, (66) ______ food is scarce. In the late summer and autumn, the animal (67) ________ a lot while food is plentiful, and gets fat. Then, as winter approaches, it finds a hidden and sheltered spot (68) ______ which to hibernate - a hole in the ground or under a pile of leaves, perhaps. The animal gradually becomes less and less active, until it (69) __________ asleep.
During the long sleep, its breathing and heartbeat becomes very (70) ______ and its body temperature drops. In this way, the creature needs very (71) ______ food. The fat in its body supplies what food it does need. Some animals stay asleep (72) _______ spring arnves and there is food again, others may wake up on the warmer days of winter, eat some of the food they have collected, and then go to sleep (73) _____.
Animals that (74) ______ are mainly small ones living in the cooler parts of the world. They include many small mammals, such as dormice, hedgehogs, chipmunks and skunks. Some amphibians and reptiles, such as frogs, toads and tortoises, also hibernate. Hibernating (75) _____ include bees and some kinds of butterflies.
Read the following passage and choose the correct answer for each of the questions below.
THE TERROR OF THE SEA
Some 16,000 icebergs are born in the Arctic Ocean each year. Most of them are calved by the age-old glaciers that cover the coast of Greenland.
Fortunately, in an average year only about 400 of them make it past the Grand Banks of Newfoundland. Once past that point, they are in some of the world's busiest shipping lanes. There they are as dangerous as torpedoes. In the year 1912, when the Titanic went down with 1 503 lives, about 1,000 icebergs made it past the Grand Banks.
A newborn iceberg, unlike most newborn things, is bigger to begin with and slowly grows smaller. When it first breaks free from the mother glacier an Arctic baby may weigh up to 3 million tons and as big as a block in New York City. But it takes two or three years of travel before it reaches the Banks. By that time most icebergs are less than 100 feet in height. Sometimes, however, a giant one, towering 400 feet above the sea is spotted.
The sight of these “blocks” is frightening enough, bụt the real danger lies in the fact that 85 percent of the bulk lies hidden under the water, ready to cut the hull of any ship that comes too close.
Icebergs usually die after they pass thè Grand Banks and meet the warm waters of the Gulf Stream. Yet, a melted-down iceberg was seen about 200 miles south of Bermuda. It was only 15 by 30 feet in size. But remember almost nine times that size was hiding under the water. It was still big enough to sink a ship.
Time, sun and the Gulf stream slowly change the icebergs to water, but, whilethey live, they are a hazard to the strongest ship and a terror to the bravest captain.
76. This article tells mostly about .......
A. ships sunk by icebergs B. how icebergs are spotted
C. dangerous icebergs D. ships built for destroying icebergs
77. About 85 percent of the iceberg is .......
A. under the water B. frozen freshwater
C. left on the glacier D. above the water
78. The third paragraph suggests that icebergs .......
A. grow bigger with age B. travel very slowlyC. move quite rapidly D. are not too dangerous
79. The writer of this passage feels icebergs are as dangerous as .......
A. explosives B. hidden submarines
C. a comb D. a weapon
80 As used in this passage, to calve means......
A. to break away from B. to be attracted to
C. to push off D. to be a
