Do you know that it is your own immune system working against the virus that makes you uncomfortable when getting a cold, but not the virus itself? So when you have got a strong immune system and the virus is strong enough too, you will possibly get terrible cold symptoms( 症状) ?
Vitamin C won't stop a cold
It is claimed that Vitamin C helps by increasing white blood cells. However, many tests have shown that it does not prevent colds. At best, it only slightly reduces the rime of symptoms.
Staying indoors won't protect you
One of the most likely sources of cold viruses is your computer mouse or desk. A study of the cold virus in offices found that 47% of desktops, 46% of computer mice and 45% of telephones had cold viruses on them.
Wrapping up warm won't protect you
Colds are more common in autumn and winter. That's because the cool, wet and cold weather drives people indoors, where viruses may more easily jump from one person to another. And the distinct peak in colds(感冒高峰) is in September and early January, which is likely due to the return of students to schools and colleges after the summer and winter vacation.
Old granny's chicken soup is right
Granny's chicken soup is an old cure for colds since a long time ago. Scientists say it is true. Chicken soup does help cure a cold. Many canned soups are just efficient as homemade ones.
【小题1】 It is ______ that makes you uncomfortable when getting a cold.

Do you know Eskimos? Let me tell you something about their lives.
Eskimos live near the North Pole(北极).There are only two seasons there, winter and summer.
There is no spring or autumn there. The winter nights are long. You can’t see the sun for more than two months, even at midday. The summer days are long. For more than two months, the sun never goes down and there’s no night.
Eskimos have warm clothes. They make their clothes from the skins of animals. From skins(皮毛) they make coats, caps and shoes.
Near the North Pole trees can’t grow, for it is too cold there. The Eskimos have to make their houses from skins, snow or stone. When they got out in storms and can’t get back home, they make houses of snow. They leave these houses when the storm is over.
Life is hard for the Eskimos, but they still like to live there.
【小题1】Near the North Pole there are _______ in a year.