Have you ever wondered why everyone's nose is in a different shape？A study from the USA says the Earth's climate（氣候）could have something to do with the shapes of our noses.
   The study found that people who have wider noses usually live in warmer，wetter areas.People with narrower noses are more commonly found in colder and drier climates.The nose plays an important role in making sure the air we breathe reaches our lungs（肺部）in a warm and wet condition.The width of nostrils（鼻孔）and length of the nose help to make sure this happens.Researchers said the nose is a little like a temperature controller.
   The researchers used 3 D images to measure（測量）the noses of more than 2，600 people from Africa，Asia and Europe.They measured the width of the nostrils，the distance between nostrils and nose height.The researchers said their findings could help people who move to different climates to get along with the heat or cold，and the humidity（濕度）.Dr.Arslan Aaidi said，"Our lifestyle aren't what they used to be.We move around the world too much.That makes it very difficult to predict the future of the nose with the changing climate."

（1）Why do people from different places have different noses in shape？

Because the Earth's climate could have something to do with the shapes of our noses.

Because the Earth's climate could have something to do with the shapes of our noses.

（2）According to the passage，what kind of noses do people in southern China have？

They have wider noses.

They have wider noses.

（3）What kind of air do our lungs need？

Warm and wet air.

Warm and wet air.

（4）How can researchers find out how high your nose is？

They can use 3 D images to measure the noses./They can use 3 D images to measure the nose height.

They can use 3 D images to measure the noses./They can use 3 D images to measure the nose height.

（5）Please put the underlined sentence into Chinese.

我們的生活方式已經(jīng)不同于以往。

我們的生活方式已經(jīng)不同于以往。