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Do you have a headache? Take an aspirin or eat bird brains. Do you want beautiful skin? Use skin cream or eat pearls. Is your hair turning gray? Color your hair or eat black rice. “Eat bird brains, pearls, and black rice?” some people ask. “How strange!” But for many Chinese people, bird brains, pearls, and black rice are not strange things to eat. Instead, they are good medicines. Food that people use for medicines is called medical(药用的) food. The Chinese have eaten medicinal food and spices(香料) for centuries. Ginger, for example, is a common spice in Chinese cooking. Ginger gives food a nice flavor. The Chinese began to use ginger many years ago. They used ginger not because it tasted good. They used ginger because it was medicinal. Ginger, they thought, was good for the digestion. It also helped people who had colds. Pepper and garlic, too, were probably medicines a long time ago. Some people don’t believe that food and spices are good medicines. They want to buy their medicine in drugstores, not in supermarkets. Other people want to try medicinal food. They say, “Maybe medicinal food can’t help me. But it can’t hurt me, either.” People can try medicinal food at a Chinese restaurant in San Francisco, California. The restaurant serves medicinal food. The menus at the restaurant have a list of dinners. Next to each dinner there is information about the food. The information helps people order “Queen’s Secret,” for example, is one dinner at the restaurant. This dinner has meat from chickens with black feathers. It is for women who want to look young. 小题1:All of the followings are common spices in Chinese cooking EXCEPT . A.ginger B.pepper C.garlic D.pearls 小题2:What do you know about medicinal food? A.The Chinese have eaten medicinal food for a long time. B.Many Chinese believe medicinal food tastes good. C.Medicinal food may be bad for your health. D.Medicinal food is served all over the world. 小题3:Why did the Chinese begin to use ginger many years ago? A.Because it gave food different flavors. B.Because it made food more delicious. C.Because it was good for people’s health. D.Because it made people feel cold. 小题4:Which answer to the following questions can be found out from the passage? A.When did the Chinese start to eat bird brains? B.Why do women like “Queen’s Secret”? C.What is the advantage of using pepper? D.How do Chinese people stop a toothache? 小题5:What can we infer (推测) according to the passage? A.More foreigners will learn more about medicinal food. B.All the Chinese will believe black rice stops hair turning gray. C.Ginger will be more and more popular in China. D.Medicinal food will be sold in drugstores and supermarkets.
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【单选题】静电场中电位为零处的电场强度()
A.
一定为零
B.
一定不为零
C.
不能确定
【单选题】点电荷+q和点电荷-q相距30cm,那么,在由它们构成的静电场中( )。
A.
电场强度处处相等
B.
在两个点电荷连线的中点位置,电场力为零
C.
电场方向总是从+q指向-q
D.
位于两个点电荷连线的中点位置上,带负电的可移动体将向-q处移动
【单选题】各向同性均匀电介质在静电场中被极化,则(1)其微观机制是分子的位移极化或取向极化(2)电介质表面上会产生可以自由移动的电荷(3)在电介质内部各处仍然是电中性的(4)电介质内部的电场为零(5)电极化强度矢量具有电荷面密度的单位上面论述正确的有:
A.
( 1 ) , ( 2 ) , ( 3 )
B.
( 1 ) , ( 3 ) , ( 4 )
C.
( 1 ) , ( 3 ) , ( 5 )
D.
( 1 ),( 5 )
【单选题】交往礼仪的核心是
A.
尊重和友好
B.
互利互惠
C.
诚实可靠
D.
团结有爱
【单选题】当导体位于静电场中,达到静电平衡状态时,导体内部的电场强度如何?
A.
处处为零
B.
有些地方电场为零,有些地方不为零
【多选题】选出正确的说法:()
A.
电位为零处,电场强度也为零。
B.
电位为零的物体必然不带电,带正电的物体电位必是正的。
C.
静电场中两点之间的电位差,与零电位点的选择无关。
D.
电位与电场强度一样,是表征电场本身某一点性质的,与引入电场中的外电荷无关。
【单选题】交往礼仪的核心是
A.
移重和友好
B.
诚信和温和
C.
朴实和善良
D.
谦虚和谨慎
【单选题】静电场中电位为零处的电场强度( )
A.
一定为零
B.
一定不为零
C.
不能确定
D.
一定是常矢量
【单选题】康和制药公司主任认为,卫生部要求开发的疫苗的开发费用该由政府资助。因为疫苗市场比任何其他药品公司市场利润都小。为支持上述主张,主任给出下列理由:疫苗的销量小,因为疫苗的使用是一个人一次,而治疗疾病尤其是慢性疾病的药物,对每位病人的使用是多次的。下列哪项如果为真.将最严重地削弱该主任提出的针对疫苗市场的主张的理由?
A.
疫苗的使用对象比大多数其他药品的使用对象多
B.
疫苗所预防的许多疾病都可以由药物成功治愈
C.
药物公司偶尔销售既非医学药品也非疫苗的产品
D.
除了康和制药公司外.其他制药公司也生产疫苗
【简答题】交往礼仪的核心是 和 。
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