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A tug is best positioned for towing and maneuvering on rivers and other restricted waters where wave action is limited when（）.
A . directly astern and pushing the tow
B . towing on a hawser
C . towing alongside and parallel to the vessel it is towing
D . towing on the hi
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When fruit is carried as refrigerated cargo，the most frequent cause of its being infected at the discharge port is（）.
A . leaks in the ship's refrigeration system
B . improper cleaning of the cargo spaces
C . carriage at the wrong temperature
D . improper precooling of the cargo space
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What is it called when it is possible to ignite the vapour above the oil?（）
A . Flash point
B . Boiling point
C . Ignition point
D . Pour point
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When turning a ship in restricted space with a strong wind，it is normally best to（）.
A . Go ahead on both engines with the rudder hard to one side，if on a twin-screw vessel
B . Back down with the rudder hard to one side，if on a single-screw vessel
C . Take advantage of the tendency to back to port，if on a twin-screw vessel
D . Turn so that the tendency to back into the wind can be used，if on a single-screw vessel
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When approaching a preferred-channel buoy，the best channel is NOT indicated by the（）.
A . light characteristic
B . color of the uppermost band
C . shape of an unlighted buoy
D . color of the light
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In rough weather，when a ship is able to maneuver，it is best to launch a lifeboat（）.
A . on the lee side
B . on the windward side
C . with the wind dead ahead
D . with the wind from aster
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A vessel is “listed” when it is（）.
A . down by the head
B . down by the stern
C . inclined due to off-center weight
D . inclined due to wind
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A capsized small sail vessel is best righted when what part of the vessel is downwind?（）
A . Stern
B . Bow
C . Centerboard
D . Mast
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When visibility is restricted（），we can say it is restricted visibility.
A . by long distance
B . by the darkness at night
C . by a vessel in front
D . by fog or falling snow
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When the（）is large, the ship is stiff; and when it is small, she is tender.
A . GM
B . free surface
C . longitudinal center of gravity
D . transverse center of gravity
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When air is at its dew point it（）.
A . will contain no additional moisture
B . has the lowest relative humidity
C . cannot keep up its moisture
D . has a low absolute humidity
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A vessel is wind rode when it is（）.
A . at anchor and heading into the wind
B . backing into the wind
C . carrying lee rudder
D . necessary to apply a leeway correction to the course
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It is the best way to （ ） damaged eyesight.
-
Choose the best answer for each question.1. When is his birthday?
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When anchoring in calm water, it is best to _____.
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When is the best time to establish your credibility?
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117. A vessel is listed when it is ___
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Hunting is at best a precarious way of procuring food, even when the diet is supplemented with
seeds and fruits. Not long after the last Ice Age, around 7,000 B.C. (during the Neolithic period),
some hunters and gatherers began to rely chiefly on agriculture for their sustenance. Others
continued the old pastoral and nomadic ways. Indeed, agriculture itself evolved over the courseof
(5) time, and Neolithic peoples had long known how to grow crops. The real transformation of human
life occurred when huge numbers of people began to rely primarily and permanently on the grain
they grew and the animals they domesticated.
Agriculture made possible a more stable and secure life. With it Neolithic peoples flourished,
fashioning an energetic, creative era. They were responsible for many fundamental inventions and
(10) innovations that the modern world takes for granted. First, obviously, is systematic agriculture--
that is, the reliance of Neolithic peoples on agriculture as their primary, not/nerely subsidiary,
source of food.
Thus they developed the primary economic activity of the entire ancient world and the basis of all
modern life. With the settled routine of Neolithic farmers came the evolution of towns and
(15) eventually cities. Neolithic farmers usually raised more food than they could consume, and their
surpluses permitted larger, healthier populations. Population growth in turn created an even
greater reliance on settled farming, as only systematic agriculture could sustain the increased
numbers of people. Since surpluses o food could also be bartered for other commodities, the
Neolithic era witnessed ihe beginnings of large-scale exchange of goods. In time the increasing
(20) complexity of Neolithic societies led to the development of writing, prompted by the need to keep
records and later by the urge to chronicle experiences, learning, and beliefs.
The transition to settled life also had a profound impact on the family. The shared needs and
pressures that encourage extended-family ties are less prominent in settled than in nomadic
societies. Bonds to the extended family weakened. In towns and cities, the nuclear family was
(25) more dependent on its immediate neighbors than on kinfolk.
What does the passage mainly discuss？
A．Why many human societies are dependent on agriculture
B．the changes agriculture brought to human life
C．How Neolithic peoples discovered agriculture
D．Why the first agricultural societies failed
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When air is at its dew point it is at its______.
A.lowest absolute humidity
B.lowest relative humidity
C.highest absolute humidity
D.highest relative humidity
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It is not as difficult to store information as it is to________it quickly when it is wanted again.
A．represent
B．retain
C．restore
D．retrieve
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Like a roof antenna, the Optima antenna brings the best reception when it is on the roof.
A．Y
B．N
C．NG
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It is one of the best concerts I_____ .
A. went to
B. had gone to
C. have ever been to
-
The government （is, are) doing its best to boost production.
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The history of ice cream is amystery. No one knows exactly how and when people began to eat it. There is onestory that the Roman emperor Nero (A.D. 37—68) sent slaves to the mountains tobring back snow. The snow was served to him sweetened with honey and fruit pulp.Marco Polo (1254—1324) tasted flavored ices, too, during his famous travels inthe Far East. He brought the recipes back toItaly.
Recipesfor ices spread fromItalyto the rest of Europe in the 1500’s. The chefs of kings constantly experimentedwith new combinations to please their masters, and at some point cream andbutter were added to the recipes for ice. The new dish was called cream ice.Cream ice, molded into amusing shapes, began to be served on the tables ofkings across Europe. Louis XIV (1638—1715)surprised his court with a dessert of eggs in cups of silver and gilt. Theeggs, of course, were really cream ice.
Graduallycream ice took the name it has today. One of the earliest advertisements forice cream was put in a New Yorkpaper in 1786. The ad announced that “Ladies and gentlemen may be supplied withice- cream every day at the City Tavern by their humble servant, Joseph Crowe.”But ice cream was still not an everyday event. It was usually presented infancy shapes at the end of dinner parties. Policy Madison (1768—1849) was famous for herimaginative dinners, and she was the first to serve ice cream at the WhiteHouse. When her guests came into the dining room, they found a table coveredwith delicious dishes, and in the center of the table, a huge mound of pink icecream on a silver platter.
Icecream was such a delicacy because it was so hard to make. At first it wasbeaten and then shaken by hand in a pan of salt and ice until it became firm. Afreezer that was cranked by hand was developed around 1846. Making ice creamwas still a chore, but cranking the freezer was much easier and faster thanshaking the mixture in a pan.
“Icecream socials” became a popular way to entertain friends. Everyone helped turnthe crank of the freezer, and homemade peach or strawberry ice cream was thereward. The development of the continuous freezer in the 1920’smade the manufacture of ice cream very quick and economical. It soon was easierto buy packaged ice cream than to make it at home. Eskimo pies and popsiclesbegan to be sold at the same time.
Possiblyice cream cones began with the World’s Fair in 1893. Vendors there sold FriedIce Cream. The ice cream was covered with a fritter batter and then quicklydipped in very hot lard or olive oil. Putting the ice cream in an alreadyprepared cone was the next step. Today there are many novelty products, fromfrozen drumsticks to ice cream pies.
16.According to the passage, which of thefollowing served ice cream disguised as eggs？
A. Policy Madison
B. Joseph Crowe
C. Louis XIV
D. Marco Polo
17.Newspaper advertisements for ice cream first appeared in_________.
A.1846
B.1893
C.1768
D.1786
18.The text would most probably be found in_________.
A. a history book
B. anadvertisement
C. a cookingbook
D. an encyclopedia
19. The main purpose of the writer is to_________.
A. explain how ice cream was invented
B. tell us the history of ice cream
C. describe why ice cream is so popular
D. persuade us the difficulties involved inmaking ice cream
20.Ice cream was so delicious, the reason is that_________.
A. it was difficult tomake
B. it was easy to make
C. it was beaten andthen shaken
D. it was complicated tomake
