of a cold front, while colder, drier air is behind it. So after a cold front hits, the weather...雪) are all the results of a strongcold front(冷锋). A cold front marks the boundary where cold air ……

We should all look after our health. We all want to avoid (避免) problems like illness, don’t we? I... and in Western countries, if we keep getting headaches or have a cold, we go to the doctor for some medicine ……

. It is the same for workers who handle (处理) cold meat.Our body experiences cold all winter long. It gets used to the cold and gradually (逐渐地) warms up. So when winter ends and spring comes, we don ……

IT is a cold and dry winter morning. When you wake up, you suddenly feel that your throat hurts. You begin to sneeze and later you may cough. You must have a cold! Wait a second. Could it just ……

soup. Yet here is the tough truth about the common cold: nothing really cures it. So why do people... serious diseases yet are powerless against something so common as a cold. Recently, scientists came closer ……

a little each day after symptoms peak, so it’s easy to believe that it’s medicine – rather than... tackle much more serious diseases yet are powerless against something so common as a cold. Recently ……

) into the freezing waters of the Songhua River.And they’re not alone. All around the world, cold-water swimming has...’re not used to it.”So, if you want to try out cold-water swimming for yourself, it’s best not to dive ……

a light jacket. Of course, the idea that cold weather can make you sick is only partly true. After all...外国人比我们更加不怕冷吗？“Put on your winter coat! You’ll catch a cold!” I don’t know how many times my mom ……

days left the strong wind and thechilly(寒冷的) rain are sure to worsen my cold.Last week, I was so confident about the strength of my good health that I went swimming when there was still a cold wind ……

. It’s so cold that we have to wear a lot of clothes. But winter is white and beautiful. When it snows... lasts from December to February here. The weather is not too cold, but it changes often. Sometimes ……

9. __________ cold all winter long. It gets used to the cold and gradually (逐渐地) warms up. So when... on cold weather, told The New York Times.Our body 9. __________ cold all winter long. It gets used ……

not engaging in “traditional” espionage, where agents are all under so-called “legal” cover...JUST days after US president Barack Obama praised his Russian counterpart Dimitry Medvedev ……

, such as producing a fever or sore throat.So, if we know how a common cold works, why haven’t scientists..., technology has become so advanced that many seemingly impossible dreams seem to be coming true. But yet, we ……

, but all the drinks were ice-cold. When I asked my host grandma for some water, she turned on the tap... after the meal. What should I do? A hot drink would save me. So when I saw a MacDonald’s, I quickly got ……

). That causes pain. But don’t be afraid! The pain goes away after a minute or so. How to avoid a frozen brain...DO you find it painful (疼痛的) if you eat ice cream too fast? It’s called a brain freeze. When cold ……