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社会工作具有()、尊重案主、重视运用社会资源等特点。
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Fortunately there are still a few tasty things for us gourmands to enjoy in relative security. Their numbers, however, are depleted almost daily, it seems, by ruthless proclamations from the ever-vigilant Food and Drug Administration and its allies, our doctors. The latest felon to face prosecution is the salt of life, sodium chloride.
Ostensible, overuse of salt causes high blood pressure and hypertension, the cause of half the deaths in the United States every year. A few years ago the anti-salt campaigners raised such a rumpus that salt was banned from baby food. Currently pressure is being ap- plied to food manufacturers to oblige them to label their products to show sodium content. Because doing so would cost mercenary manufacturers money, they argue that they have no idea how much salt remains on such things as potato chips and how much sticks to the bag. Furthermore, salt isn't the only harmful ingredient in food. If the manufacturer has to pro- vide sodium content, why not require him to list every ingredient and specify which are detrimental to our health？ Cigarettes have a warning printed on them. Shouldn't the same type of warning appear on canned foods that are notoriously oversalted？
There are endless ifs and buts in the controversy, but the most telling of these is the questionable proof of salt's diabolic effect upon the blood pressure. True, people who cut their salt intake lowered their blood pressure but where is the scientific proof that something other than salt didn't to the trick？ The most common means of providing dubious proof that salt causes hypertension is to compare societies that use little salt with those that use mountains of salt in their daily diets. Which group has the higher rate of hypertension？ Whose blood pressure is lower？ What happens when salt is introduced into a group where salt is a novelty？ Does the blood pressure rise significantly？ Studies of the Japanese indicate that as the world's greatest salter, they suffer the most from hypertension. On the other hand, the simple, salt-free cuisine of several tribes in the Solomon Islands has kept older tribesmen and women from developing hypertension and high blood pressure, ailments traditionally killing their peers in America. No account is taken of the effects of inflation, recession, pollution, crime, and sundry other ills to which Americans, unlike people on primitive islands, are exposed.
To salt or not to salt？ That is the question. Now that the question had arisen, it must not be treated with levity but, rather, with searching scientific investigation so that those of us who are preoccupied with both savory food and longevity may decide which of the two is worth its salt.
Food manufacturers don't want to label packages with sodium content because______.
听力原文： Two teenagers were killed in the Gaza Strip on Wednesday.
Reports allege the two died when Palestinian police opened fire on rioters protesting at a death sentence handed down against a local man for slaying a policeman.
But Palestinian police chief General Ghazi Jabali denied his men were responsible for the killings and in- stead blamed the Israeli army, which in turn rejected his accusations outright.
Relatives identified the dead youths as Ala al-Hams, and Khamis Mahmud Salama, both 17.
Another six people, including a 10-year-old boy, were wounded in the violence which erupted in Yabna refugee camp after a Gaza City security court condemned Raed al-Attar to death for the February killing of a policeman.
"They were killed and their comrades wounded when Israeli soldiers on a lookout post near the Egyptian border opened fire on the crowd," Jahali told a press conference.
The Israelis were responding to shots fired by unknown assailants driving in a car near Rafah, in the south of the Gaza Strip, he said.
"During that time, the Palestinian police did not intervene," Jabali said.
"We categorically reject all these accusations about a supposed Israeli army role in these incidents," an Israeli army spokesman told reporters. "No Israeli soldier in the Gaza Strip was involved in any of the shots which caused casualties.'
Attar, 25, a Palestinian security force member, was accused of acting as a double agent for the Islamic Resistance Movement or Hamas, the main movement opposed to Yasser Arafat's Palestinian Authority and its peace accords with Israel.
An associate, Mohammed Abu Shamallah, 25, was sentenced to life in prison and a third man, Ossama Abu Tahar, 24, was jailed for 15 years at hard labor for involvement in the shooting.
It was the first time the Palestinian Authority has handed down the death sentence against a suspected member of Harms.
But it was not known if Arafat would sign the death warrant or commute Attar’s sentence to life in prison as he has done in all but three previous murder cases.
More than 2,500 people joined a funeral procession for Hamas, which turned into a protest march against the Palestinian Authority as it crossed Rafah to the local cemetery.
How many people were wounded in the violence erupted in Yabna refugee camp after Raed al-Attar was condemned to death？
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