题目内容
（请给出正确答案）
Refined table manners, though less popular than before in current social life,______.
A．are still a must on certain occasions
B．are bound to return sooner or later
C．are still being taught by parents at home
D．can help improve personal relationships
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更多“Refined table manners, though …”相关的问题
A．are still a must on certain occasions
B．axe bound to return sooner or later
C．are still being taught by parents at home
D．can help improve personal relationships
Which is considered as a good manner in Mexico？
A．To put your hands on the table during the meal.
B．To make noise in eating any kind of food.
C．To eat your meal quickly and clearly.
D．To put your elbows away from the table.
Which of the following is NOT considered bad table manner？
A．Smack one's mouth to show that he enjoys the meal.
B．Make a loud sound when one is drinking soup.
C．Speak only when one has swallowed the food in his mouth.
D．Excuse oneself from dinner table by saying he is going to the toilet.
Which of the following is the acceptable table manner in Britain？
A．You lift your soup bowl to your mouth.
B．You make noise when drinking soup.
C．You shouldn't raise your elbows to your shoulders.
D．You shouldn't put your hands on the table.
A.to put the tea spoon on the saucer after stirring one’s tea
B.to put the napkin around one’s neck
C.to use knife to lift food to one’s mouth
D.to stick chopsticks at the center of rice
Which of the following shows good table manner
A．Talking with your mouth full.
B．Putting bones on your plate.
C．Putting your elbows on the table.
D．Chewing with your month open.
It can be inferred from the people's eating habit in a castle that______.
A．they lived a luxurious life and their diet was very delicate
B．they lived a primitive life and their table manner was often rude
C．they lived a highly civilized court life
D．riley lived a comparatively luxurious but not-so-civilized life
If the salinity(含盐量) of ocean waters is analyzed, it is round to vary only slightly from place to place. Nevertheless, some of these small changes are important. There are three basic processes that cause a change in oceanic salinity. One of these is the subtraction of water from the ocean by means of evaporation—conversion of liquid water to water vapor. In this manner, the salinity is increased, since the sales stay behind. If this is carried to the extreme, of course, white crystals of salt would be left behind; this, by the way, is how much of the table salt we use is actually obtained.
The opposite of evaporation is precipitation, such as rain, by which water is added to the ocean. Here the ocean is being diluted so that the salinity is decreased. This may occur in areas of high rainfall or in coastal regions where rivers flow into the ocean. Thus salinity may be increased by the subtraction of water by evaporation, or decreased by the addition of fresh water by precipitation or runoff.
Normally, in tropical regions where the sun is very strong, the ocean salinity is somewhat higher than it is in other parts of the world where there is not as much evaporation. Similarly, in coastal regions where rivers dilute the sea, salinity is somewhat lower than in other oceanic areas.
A third process by which salinity may be altered is associated with the formation and melting of sea ice. When seawater is frozen, the dissolved materials are left behind. In this manner, seawater directly beneath freshly formed sea ice has a higher salinity than it did before the ice appeared. Of course, when this ice melts, it will tend to decrease the salinity of the surrounding water.
In the Weddell Sea, off Antarctica, the densest water in the oceans is formed as a result of this freezing process, which increases the salinity of cold water. This heavy water sinks and is found in the deeper portions of the oceans of the world.
What does the passage mainly discuss？
A．The elements of salt.
B．The bodies of water of the world.
C．The many forms of ocean life.
D．The salinity of ocean water.
