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Directions: Read the following text and choose the most suitable heading from A-AC for each paragraph. There is one extra heading which you do not need. A. Preparations for surfing B. Potential dangers C. Current surfers' attitude towards surfing D. Finding the right wave AB. Where surfers come from AC. The most dangerous sport Surfing is one of the fastest developing sports in the world today. It used to be practiced by the ancient Polynesians, but since the 1960s anyone and everyone can go surfing. 1. Surfing is more of a way of life for some people than simply a sport, and many spend their time travelling around the planet in search of the perfect wave. Typically, the average surfer is a relaxed type of person: they say it's something about the art of catching waves and being out in the elements that makes you feel very relaxed. Surfers greet each other by saying 'Howzit?' (a bit like 'How's it going?') and sometimes call each other 'bru' or 'brah' from the Hawaiian word for brother, 'braddah'. British surfers travel in WV camper vans and look a bit like hippiest. 2. Anywhere that has a coastline with big waves is home to surfers. Half of Australia's coastline is surfable so there are lots of Australian surfers. Hawaii is where the sport was invented and the current champion is Hawaiian Sunny Garcia. A lot of surfers also come from California and New Zealand. There are even surfers in the UK who hang out on the southwest coast where the Atlantic waves hit the shore. 3. Get a board. Most surfers start on short boards. Long boards and guns are only for experienced surfers catching huge waves. You also have to be a very strong swimmer: being able to swim at least 100 meters, and 25 meters underwater is required. 4. Beach breaks are waves which fall onto sand. They can be big, but are best if you are a beginner. Waves vary in size during different seasons and even at different times of the day, so watch out! Surfing can be dangerous and you need advice from someone experienced. More experienced surfers catch waves at point and reef breaks. They are away from the coast, and the swell comes deep from the ocean. Point breaks are waves bent because of the shape of the land beneath the ocean, and reef breaks are shaped by coral and rocks. 5. Surfing is a dangerous sport if you aren't a strong swimmer or if you try to do too much. The main thing most surfers have to worry about is their own board or other surfers' boards. Great white sharks, stingrays and deadly jellyfish are also not friendly to surfers, but actually running into one of these is quite rare.
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【多选题】气郁体质的人可多食下列哪些食物
A.
忘忧草
B.
茼蒿
C.
香菜
D.
玫瑰花
【单选题】齿形指面适于夹持哪种工件
A.
表面粗糙的毛坯或半成品
B.
脆性工件
C.
薄壁件
D.
已加工表面工件
【多选题】有利于钙吸收的因素有()。
A.
维生素D
B.
乳糖
C.
适宜的钙、磷比例
D.
年龄及机体的需要情况
【多选题】有利于钙吸收的因素有()
A.
充足的蔬菜
B.
充足的蛋白质供应
C.
充足的脂肪供应
D.
充足的维生素D供应
E.
肠腔中偏酸性的环境
【单选题】齿形指面适于夹持哪种工件
A.
表面粗糙的毛坯或半成品
B.
脆性件
C.
薄壁件
D.
已加工表面的工件
【单选题】齿形指面适于夹持哪种工件。
A.
表面粗糙的毛坯或半成品
B.
脆性工件
C.
薄壁件 D. 已加工表面工件
【多选题】气郁体质的人可多食下列哪些食物
A.
忘忧草
B.
茼蒿
C.
香菜
D.
玫瑰花
E.
牛肉
【单选题】利用太阳的投影和地球自转的原理,借指针所生阴影的位置来显示时间。
A.
华表
B.
嘉量
C.
日晷
D.
门海
【多选题】有利于钙吸收的因素有哪几种
A.
维生素D
B.
C.
某些氨基酸
D.
乳糖
E.
钙磷化
【多选题】有利于钙吸收的因素有 ()。
A.
乳糖
B.
多种氨基酸
C.
维生素 D
D.
维生素 C
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