The human body can tolerate only a small range of temperature, especially when the person is engaged in vigorous activity. Heat {#blank#}1{#/blank#} usually occur when large amounts of water and/or salt are lost through oversweating following exhausting exercise. When the body becomes overheated and cannot {#blank#}2{#/blank#} this overheatedness, heat exhaustion and heat stroke are possible.

    Heat exhaustion is generally {#blank#}3{#/blank#} by sweaty skin, tiredness, sickness, dizziness, plentiful sweating, and sometimes fainting, resulting from a(n) {#blank#}4{#/blank#} intake of water and the loss of fluids.  First aid treatment for this condition includes having the victim lie down, {#blank#}5{#/blank#} the feet 8 to 12 inches, applying cool, wet cloths to the skin, and giving the victim sips of salt water (1 teaspoon per glass, half a glass every 15 minutes) over a 1-hour period.

    Heat stroke is much more serious; it is a(n) {#blank#}6{#/blank#} life-threatening situation. The characteristics of heat stroke are a high body temperature (which may reach 106° F or more); a rapid pulse; hot, dry skin; and a blocked sweating {#blank#}7{#/blank#}. Victims of this condition may be unconscious, and first-aid measures should be {#blank#}8{#/blank#} at quickly cooling the body. The victim should be placed in a tub of cold water or {#blank#}9{#/blank#} sponged with cool water until his or her temperature is sufficiently lowered. Fans or air conditioners will also help with the cooling {#blank#}10{#/blank#}. Care should be taken, however, not to over-chill the victim once the temperature is below 102° F.

    For several decades, various types of artificial intelligence kept shocking the world. Robots could {#blank#}1{#/blank#} people in highly competitive games and then quickly destroyed their human competitors.

    AI long ago mastered chess, the Chinese board game Go and even the Rubik's cube, which it managed to solve in just 0. 38 second.

    Now machines have a new game that will allow them to {#blank#}2{#/blank#} humans: Jenga, the popular game in which players {#blank#}3{#/blank#} remove pieces from an increasingly unstable tower of 54 blocks, placing each one on top until the entire structure would {#blank#}4{#/blank#}.

    A newly released video from MIT shows a robot developed by the school's engineers playing the game with surprising accuracy. The machine is equipped with a soft gripper (夹子), a force-sensing wrist and an external camera, allowing the robot to detect the tower's {#blank#}5{#/blank#} the way a human might do

    Unlike in purely recognitive tasks or games such as chess or Go, playing the game of Jenga also requires mastery of physical acts such as pushing, pulling, placing, and arranging pieces. It must {#blank#}6{#/blank#} interactive physical operation, where you have to touch the tower to learn how and when to move blocks.

    Imitating it is rather difficult, so the robot has to learn in the real world, by working with the real Jenga tower. Recently, a relevant research was published in the journal Science Robotics. Researchers say the robot demonstrates that machines can learn how to perform certain tasks through actual touching instead of relying heavily on visual {#blank#}7{#/blank#}. That physical {#blank#}8{#/blank#} is significant, researchers say, because it provides further proof that robots can be used to perform {#blank#}9{#/blank#} tasks, such as separating recyclable objects from landfill trash and assembling consumer products.

    In a cellphone assembly line, the felling of any component is coming from force and touch rather than vision. To become an accomplished Jenga player, the robot did not require as much repetitive practice as you might imagine. Hoping to avoid reconstructing a Jenga tower thousands of times, researchers developed a method that allowed the robot to be trained on about 300 games. Researchers say the robot has already begun facing off against humans, who remain {#blank#}10{#/blank#} players—for now.