单选题 Which of the following statements is TRUE according to the passage? ______
A． Oceanic salinity has great effect on sea life
B． Many factors combine to cause changes in oceanic salinity
C． The movement of the water is related to the amount of salt
D． The temperature of the water has much to do with the oceanic salinity
【答案】D。解析：按照出题顺序，此题考查的是海水盐度变化的第三个原因。根据第四段可知．海水冻冰后，杂质析出，因此冰下的海水比冰冻前的盐度高；冰融化后，海水盐度又会降低。所以答案为D，即海水温度与盐度有很大关系。
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1 The purpose of mentioning the Weddell Sea is______
A． to give an example of cold-water salinity
B． to point out the location of deep waters
C． to make a comparison between hot-water salinity and cold-water salinity
D． to show that the water in the Weddell Sea varies in salinity from place to place
2根据以下材料，回答题
When my family moved to America in 2010 from a small village in Guangdong, China, we brought not only our luggage, but also our village rules, customs and culture. One of the rules is that young
people should always respect elders. Unluckily, this rule led to my very first embarrass- ment in the United States.
I had a part-time job as a waiter in a Chinese restaurant. One time, when I was serving food to a middle-aged couple, the wife asked me how the food could be served so quickly. I told her that I had made sure they got their food quickly because I always respect the elderly. As soon as I said that, her
face showed great displeasure. My manager, who happened to hear what I said, took me aside and gave me a long lecture about how sensitive Americans are and how they dislike the description
"old". I then walked back to the table and apologized to the wife. After the couple heard my reason, they understood that the problem was caused by cultural differences, so they laughed and were
no longer angry.In my village in China, people are proud of being old. Not so many people live to be seventy or eighty, and people who reach such an age have the most knowledge and experience.
Young people always respect older people because they know they can learn from their rich experience.However, in the United States, people think "growing old" is a problem since "old" shows
that a person is going to retire or that the body is not working well. Here many people try to keep them-selves away from growing old by doing exercises or jogging, and women put on makeup, hoping tolook young. When I told the couple in the restaurant that I respect the elderly, they got angry be-cause this caused them to feel they had failed to stay young. I had told them something they didn't want to hear.After that, I changed the way I had been with older people. It is not that I don't
respect the many more; I still respect them, but now I don't show my feelings through words.By Jack
Jack brought the couple their food very fast because______
A． the manager asked him to do so
B． he respected the elderly
C． the couple wanted him to do so
D． he wanted more pay
