The ________ air in this area has a strange smell, but we ________ it．

1. A.
   polluted, used to
2. B.
   polluted, are used to
3. C.
   polluting, used to
4. D.
   polluting, are used to

The ____ air in this area has a strange smell, but we_____ it.

A. polluted, used to               B. polluted, are used to

C. polluting, used to              D. polluting, are used to

Answer the questions（根据短文内容回答下列问题)
Your Nose is Busy and Important
Your nose has many important jobs, and is always busy.
Smelling
Smelling helps you gather information about the world around you. A good scent (气体),like flowers, brings you pleasure. A bad scent, like smoke or sour milk, warns you of danger. Most things around you release scent particles (微粒) into the air. These invisible chemicals enter the nose when you breathe. Nerves in the nose send information to the brain to identify a smell. You are able to recognize thousands of smells.
Breathing
Most of the air you breathe enters through your nose. The nose uses hair and mucus (粘液) to clean dust and germs (细菌) out of the air. The air that enters your nose contains oxygen. Your body uses oxygen to unlock the energy in the food you eat.  Even when you sleep, your body needs energy to keep your heart beating and your brain working.
Tasting
Your nose helps you enjoy food. Flavor is a mixture of taste and smell. The smell of the food helps you identify what you are eating. The sense of smell contributes more to (贡献) food flavor than the sense of taste .When you are sick and have a stuffy nose, your food doesn’t taste as good because without smell, food loses most of its flavor.
Smell memory
Smells can bring back memories. Your brain uses a process to create a picture in your mind from the odors(气味)you smell. Smells can affect your feelings because the part of the brain that helps you identify smells is close to the area that affects your emotions, mood and memory. More smell memories are collected as you get older.
Your nose has many important jobs, and is more than just a smeller!
【小题1】How many important jobs does a nose do according to the passage? What are they?
【小题2】Smelling helps you recognize thousands of smells, doesn’t it?
【小题3】What does the nose use to clean dust and germs out of air?
【小题4】What happens to your food if you are sick and have a stuffy nose?
【小题5】How do smells bring back memories?
【小题6】What do you think of your nose? Why do you think so?

单词拼写（共5分）
根据首字母及汉语提示，完成下列单词的拼写，使句意明确，语言通顺。
【小题1】His words are strongly i__________(使印象深刻) on my memory.
【小题2】 What about reading aloud to practice p____________(发音)？
【小题3】As a teacher, you must c______________(全神贯注) on your work .
【小题4】The air pollution in this area caused the ________(死亡) of many trees.
【小题5】 He is t__________（害怕）of speaking in public.

单词拼写(共5小题；每小题1分，满分5分)
根据首字母及汉语提示，完成下列单词的拼写，使句意明确，语言通畅。
【小题1】Today, I want to i___________(介绍) a new student to all of you.
【小题2】What about reading aloud to practice p____________(发音)？
【小题3】Excuse me, sir. Can I see your driver’s l______________(执照)?
【小题4】The air pollution in this area caused the d________(死亡) of many trees.
【小题5】He is t__________（害怕）of speaking in public.