任务型阅读
What is the easiest way to stay warm in the super cold?____. At least that is what Santa Claus told me.
During Christmas, Dennis and I went to Finland. We brought back some tips for keeping warm in a cold temperature.
⒈There layers(层)work wonders.
Start with the base layer, which sits right on your skin: choose something that can absorb sweat____A sweater is a good choice. The most important layer is the outer clothes, which should be waterproof(防水的)and windproof.
⒉____.
You lose heat from every millimeter of uncovered skin, which was the biggest lesson I learned on this trip. My whole body was well covered. But I missed one sport: my face. So it often felt like the wind was going to blow my nose off.
⒊Exercise, don't just stand still.
When it's cold, exercising may be the last thing you feel like doing, but be smart.____and you will feel the difference. When we first got to Finland, we were freezing. But after a couple of minutes jumping around, we felt less cold.
⒋If you have a heater
You may want to turn it all the way up, but it's best to keep it at between 18 and 20 degrees____but not create a huge difference between inside and outside.
A. Grow a crazy beard.
B. The key is what your layer is
C. Cover every bit of your skin
D. That will keep you comfortable
E. Take a walk, faster than your normal speed
F. Don't forget to keep your hands and feet warm, too
G. The middle layer keeps your body heat from getting away
陆地上的生物物种。 
因此，必须以“为了地球上的生命”的高度来拯救我们的海洋。