Germs(细菌) are everywhere. You can’t see them,...

Germs（细菌） are everywhere. You can’t see them, but they are on your desk, on your computer, and even in the air! Like people, germs move around the world. They fly with us on planes. When food, clothes, and other things travel around the world, germs travel, too. Some germs are safe, but some are dangerous. Germs cause illnesses like colds and the flu.

Warmer Weather Brings Germs

The world’s weather is changing. Cooler countries are getting warmer, so insects from hot countries can move there. Some of these insects, like mosquitoes, carry dangerous germs. These germs cause headaches,　 fever, and can even kill people.

Under Your Skin

Your skin protects you from germs. It stops some germs, but not all. They can enter your body when you eat, or when you have a cut. Germs are on your hands, too. They enter your body when you touch your eyes, nose, or mouth.

Fighting Germs

Your immune system protects you, too. When germs get inside your body, your immune system finds and kills them. Special cells(细胞) move around your body and fight germs. They help you stay healthy. Other cells make antibodies. Antibodies help your body find and stop germs. What can you do to fight germs? You should wash your hands with soap and water. Soap kills many germs, and water washes them away.

1.According to the passage, insects　　　　 .

A. kill germs        B. carry germs            C. protect germs                D. love germs

2.The underlined word “there” refers to 　　　　 .

A. cooler countries        B. hot countries                C. everywhere                D. the world

3.Which of the following is right according to the passage?

A. All germs are dangerous        B. There are more germs in cold places

C. Soup can kill all germs                D. Germs can get into your body

4.What does the word “immune” mean in Chinese in the last paregraph?

A. 消化        B. 神经                C. 免疫                D. 分泌

5.What’s the main idea of this passage?

A. Germ are everywhere        B. Weather in Changing

C. Skin stops germs                D. Germs are developed

九年级英语阅读理解困难题查看答案及解析

Germs(细菌) are everywhere. You can’t see them, but they are on your desk, on your computer, and even in the air!

Like people, germs move around the world. They fly with us on planes. When food, clothes, and other things travel around the world, germs travel, too. Some germs are safe, but some are dangerous. Germs cause illnesses like colds and the flu.

Warmer Weather Brings Germs

The world’s weather is changing. Cooler countries are getting warmer, so insects from hot countries can move there. Some of these insects, like mosquitoes, carry dangerous germs. These germs cause headaches, fever, and can even kill people.

Under Your Skin

Your skin protects you from germs. It stops some germs, but not all. They can enter your body when you eat, or when you have a cut. Germs are on your hands, too. They enter your body when you touch your eyes, nose, or mouth.

Fighting Germs

Your immune system(免疫系统) protects you, too. When germs get inside your body, your immune system finds and kills them. Special cells(细胞) move around your body and fight germs. They help you stay healthy. Other cells make antibodies(抗体). Antibodies help your body find and stop germs.

What can you do to fight germs? You should wash your hands with soap and water. Soap kills many germs, and water washes them away.

1.According to the text, insects ______.

A. kill germs               B. carry germs              C. protect germs

2.The underlined word “there” refers to ______.

A. cooler countries         B. hot countries            C. the world

3.Which of the following is right according to the text?

A. All germs are dangerous.

B. There are more germs in cold places.

C. Germs can get into your body.

4.What do antibodies do?

A. They get inside your body and kill your immune system .

B. They carry dangerous germs.

C. They help protect us from germs.

5.Which can be the best title for this text?

A. Germs Are Everywhere B. Weather Is Changing      C. Skin Stops Germs

九年级英语阅读理解困难题查看答案及解析

Germs(细菌) are everywhere. You can’t see them, but they are on your desk, on your computer, and even in the air!

Like people, germs move around the world. They fly with us on planes. When food, clothes, and other things travel around the world, germs travel, too. Some germs are safe, but some are dangerous. Germs cause illnesses like colds and the flu.

Warmer Weather Brings Germs

The world’s weather is changing. Cooler countries are getting warmer, so insects from hot countries can movethere. Some of these insects, like mosquitoes, carry dangerous germs. These germs cause headaches, fever, and can even kill people.

Under Your Skin

Your skin protects you from germs. It stops some germs, but not all. They can enter your body when you eat, or when you have a cut. Germs are on your hands, too. They enter your body when you touch your eyes, nose, or mouth.

Fighting Germs

Your immune system(免疫系统) protects you, too. When germs get inside your body, your immune system finds and kills them. Special cells(细胞) move around your body and fight germs. They help you stay healthy. Other cells make antibodies. Antibodies help your body find and stop germs.

What can you do to fight germs? You should wash your hands with soap and water. Soap kills many germs, and water washes them away.

1.According to the text, insects ______.

A. kill germs　　 B. carry germs　　 C. protect germs　　 D. love germs

2.The underlined word “there” refers to ______.

A. cooler countries　　 B. hot countries　　 C. everywhere　　 D. the world

3.Which of the following is right according to the text?

A. All germs are dangerous.　　 B. There are more germs in cold places.

C. Soap can kill all germs.　　 D. Germs can get into your body.

4.What do antibodies do?

A. They kill germs and wash them away.　　 B. They find and develop germs.

C. They help protect us from germs.　　 D. They carry dangerous germs.

5.Which can be the best title for this text?

A. Germs Are Everywhere　　 B. Weather Is Changing

C. Skin Stops Germs　　 D. Germs Are Developed

九年级英语阅读理解简单题查看答案及解析

Germs are very small living things. They are so small that we cannot see them unless we use a microscope. They are found in all kinds of places, all over the world. There are four main types of germs that they can invade (侵入) plants, animals and people, and sometimes they can make us sick.　

Bacteria (细菌) live just about everywhere on earth. Not all bacteria are bad. Some of them are good for our bodies. They help us keep things in balance. Good bacteria live in our bodies and help us use the nutrients in the food we eat and make waste from what's left over. We couldn't make the most of a healthy meal without these important helper germs! On the other hand, there are several types of bad bacteria, including those that cause sore throats.

Viruses (病毒) need a host to keep living. They need to be inside a place of a living plant or animal, including humans, or even inside a bacterium! Whatever a virus lives in is called its host. Once a virus finds the perfect host, the goal is to reproduce and spread. Viruses are pretty tricky because they can change quickly to fit a new environment. When viruses get inside people's bodies, they can spread and make people sick.

Fungi (真菌) are kind of like plants. Unlike other plants, fungi cannot make their own food from soil, water, and air. Fungi love warm and wet places. Most fungi are harmless. The kind that can grow on your skin can be treated. It probably won't hurt you. But it really makes you uncomfortable!

Protozoa (原生动物) are extremely small. Most of them live in water. Some protozoa actually eat bacteria and they are good because they also eat the waste of other small living things. Some protozoa are bad, and they live off of other living things, sometimes humans. For example, if a person drinks unclean water, protozoa may cause health problems.

1.Are germs small?

____________________

2.How many germs are mentioned in the passage?

____________________

3.Why can viruses change quickly?

____________________

4.Where do fungi love to stay?

____________________

5.What does the passage mainly talk about?

____________________

九年级英语回答问题中等难度题查看答案及解析

Good friends are like stars. You don’t always see them, ______ you know they are there.

A. as　　　　　　 B. but　　　　

C. for　　　　 　 D. then

九年级英语单项填空中等难度题查看答案及解析

Good friends are like stars. You don’t always see them, ______ you know they are there.

A. and　　 B. but　　 C. or　　 D. so

九年级英语单选题中等难度题查看答案及解析

You can't imagine　　 amazing they are　　 you see them with your eyes.

A. what； unless　　 B. how； unless

C．how； if　　　 　 D．what； if

九年级英语单项填空简单题查看答案及解析

Do you know viruses (病毒) and bacteria (细菌)? Both of them are very small, we can't see them with our eyes, and many people know nothing about them, In fact, there are a number of differences between viruses and bacteria. Bacterium, the singular form of the word bacteria, is a one-celled (单细胞) living thing, with complete sets of both RNA and DNA genetic codes (遗传密码). For viruses, some are sections of RNA, and the others are sections of DNA. So, bacterium is at least a hundred times larger than a typical virus.

One main difference between viruses and bacteria is the method of reproduction. A bacterium is a completely independent and self-reproducing unit. When the time is right, bacterium will divide its DNA and RNA genetic material in two. This is how bacteria live in almost every environment on Earth, including non-living things like rocks or plastic.

A virus, on the other hand, cannot reproduce without a living host. A virus may lie for thousands of years before finally coming into a suitable host. Once it enters the body of a host, a virus will get in the ling cell. Once inside a living cell, a virus takes the place of the living cell's DNA or RNA genetic instructions with its own. Those instructions are usually to make as many copies of the virus as possible.

Ninety-nine percent of all known bacteria are considered useful to humans, or at least have no bad influence. But most viruses, on the other hand, serve no good purpose. Their only purpose is to create more viruses in order to make themselves continue to live.

Bacteria are alive, which means they can be killed by some form of chemical things. Antibiotics (抗生素) can kill bacteria. Viruses, by comparison, are not considered living things. They cannot be 'killed' in the same way as antibiotics kill bacteria. In fact, any medicine is useless for virus' infections. The disease must run its course until the body can make a successful protection on its own.

九年级英语填空中等难度题查看答案及解析

—Can you see ______ ?

—No. Let’s go and have a look. Maybe we can help them.

A. what are they doing there

B. why are they talking there

C. what is happening there

D. what are they talking about

九年级英语单项填空中等难度题查看答案及解析

—Can you see ________?—No. Let’s go and have a look.Maybe we can help them.

A.what are they doing there B.what was happening there

C.what’s going on there D.what are they talking there

九年级英语单选题中等难度题查看答案及解析