更多"The survival of a forest depends no"的相关试题:
[判断题]The reputation of a restaurant depends only on its quality of the food and drinks.
[简答题]Originally, shooting was only a tool for survival, and it wasn’t a sporting event until the 19th century. In 1896 it became an event of the Olympic Games for the first time. And then it was suspended from 1904 to 1928, and returned to the Olympics in 1932. Women were allowed to join in Olympic shooting competitions in 1968 for the first time. There were only 3 shooting events in the 1896 Olympics, but now it contains 17 events.
[单项选择]If we had to rely on only five senses for survival, we would be in very sad shape indeed. We wouldn’t know up from down. We wouldn’t know when to eat or drink. We wouldn’t know what our muscles were doing or what position our limbs were in. We wouldn’t know when our body was damaged because we wouldn’t feel pain. We might freeze to death without even a shiver, or overheat without a drop of sweat. The five senses--touch, taste, smell, bearing and sight-respond only to stimulation from the outside world, but the inside world of our bodies must also receive and respond to important messages.
Our internal senses keep us alive and enable us to use our external senses. In effect, the internal senses tell our brains how to run our bodies. Hunger or thirst register in a part of the brain called the hypothalamus(丘脑下部) , when a lack of food chemicals are detected in the blood.
Another internal sense that controls our balance is maintained by three fluid-filled loops in the inner
A. internal senses
B. sense of balance
C. five senses
D. brain’s function
[单项选择]
Weather changes when the temperature and the amount of water in the atmosphere change. We can see and feel water coming from the atmosphere when we have rain. But the water must somehow get back to the atmosphere. Meteorologists call this the water cycle.
There are many stages in the water cycle. Rain falls when water vapor in clouds condenses (凝结). Drops of water form and fall to the ground. The water soaks into the ground and feeds streams and rivers. A lot of rain falls into the sea. The heat of the sun evaporates some of the water in the ground and in the rivers, lakes, and the sea. It changes the liquid water into water vapor. The vapor rises onto the air. Water vapor is normally invisible. On a very damp of humid day, however, you can sometimes see water vapor rising from a puddle (水坑) or pond in a mist (薄雾) above the water. Water vapor also gets into the air from living things. Trees and other plants take in water through their roots and give off water vapor from t
A. Two.
B. Three.
C. Four.
D. Fiv
