All human beings eat food and make use of the chemical energy in it, so do all other animals. Perhaps you wonder where all that chemical energy comes from. Why doesn’t the food all get used up?

The answer is that new food is being grown as fast as old food is used to. It is the green plants that form the new food. Animals either eat the plants or eat other animals that have eaten plants.

The green substance of plants is chlorophyll. Chlorophyll can absorb sunlight. When it does so, it changes the energy of the sun into chemical energy. The chemical energy present in sunlit chlorophyll is used to combine dioxide in the air with water from the soil. Starch and other complicated compounds are formed. These are high in chemical energy obtained from the sunlit chlorophyll.

They make up the food on which mankind and all other animals live. In the process of forming this food, some oxygen atoms are left over. These are given off into the air by the plants. The whole process is called photosynthesis.

Thus, plants use sunlight to from food and oxygen to from carbon dioxide and water again. Plants change the sun’s energy into chemical energy. And animals change the animal energy into kinetic and heat energy.

What will happen when the chlorophyll absorbs sunlight? It will ....

All human beings eat food and make use of the chemical energy in it, so do all other animals. Perhaps you wonder where all that chemical energy comes from. Why doesn’t the food all get used up?

The answer is that new food is being grown as fast as old food is used to. It is the green plants that form the new food. Animals either eat the plants or eat other animals that have eaten plants.

The green substance of plants is chlorophyll. Chlorophyll can absorb sunlight. When it does so, it changes the energy of the sun into chemical energy. The chemical energy present in sunlit chlorophyll is used to combine dioxide in the air with water from the soil. Starch and other complicated compounds are formed. These are high in chemical energy obtained from the sunlit chlorophyll.

They make up the food on which mankind and all other animals live. In the process of forming this food, some oxygen atoms are left over. These are given off into the air by the plants. The whole process is called photosynthesis.

Thus, plants use sunlight to from food and oxygen to from carbon dioxide and water again. Plants change the sun’s energy into chemical energy. And animals change the animal energy into kinetic and heat energy.

From the text we know that ....

All human beings eat food and make use of the chemical energy in it, so do all other animals. Perhaps you wonder where all that chemical energy comes from. Why doesn’t the food all get used up?

The answer is that new food is being grown as fast as old food is used to. It is the green plants that form the new food. Animals either eat the plants or eat other animals that have eaten plants.

The green substance of plants is chlorophyll. Chlorophyll can absorb sunlight. When it does so, it changes the energy of the sun into chemical energy. The chemical energy present in sunlit chlorophyll is used to combine dioxide in the air with water from the soil. Starch and other complicated compounds are formed. These are high in chemical energy obtained from the sunlit chlorophyll.

They make up the food on which mankind and all other animals live. In the process of forming this food, some oxygen atoms are left over. These are given off into the air by the plants. The whole process is called photosynthesis.

Thus, plants use sunlight to from food and oxygen to from carbon dioxide and water again. Plants change the sun’s energy into chemical energy. And animals change the animal energy into kinetic and heat energy.

The green substance of plants is chlorophyll. The underlined word in the above is closest in meaning to ...

A flood is an overflow of an expanse of water that submerges land. In the sense of “ flowing water”, the world may also be applied to inflow of the tide. Flooding may result from the volume of water within a body of water, such as a river or lake , which overflows or break levees, with the result that some of the water escapes its unusual boundaries.

While the size of a lake or other body of water will vary with seasonal changes in precipitation and show melt, it is not a significant flood unless such escapes of water endanger land areas used by man like a village, city or other inhabited area.

Floods can also occur in rivers, when fl ow exceeds the capacity of the river channel, particularly at bends or meanders. Flood often cause damage to homes and businesses if they are placed in natural flood plains of rivers. While flood damage van be virtually eliminated by moving away from and other bodies of water, since time out of mind, people have lived and worked by the water to seek the sustenance and capitalize on the gains of cheap and easy travel and commerce by being near water. That humans continue to inhabit areas threatened by flood damage is evidence that the perceived value of living near the water exceeds the cost of repeated periodic flooding.

What is the main idea of the third paragraph?

A flood is an overflow of an expanse of water that submerges land. In the sense of “ flowing water”, the world may also be applied to inflow of the tide. Flooding may result from the volume of water within a body of water, such as a river or lake , which overflows or break levees, with the result that some of the water escapes its unusual boundaries.

While the size of a lake or other body of water will vary with seasonal changes in precipitation and show melt, it is not a significant flood unless such escapes of water endanger land areas used by man like a village, city or other inhabited area.

Floods can also occur in rivers, when fl ow exceeds the capacity of the river channel, particularly at bends or meanders. Flood often cause damage to homes and businesses if they are placed in natural flood plains of rivers. While flood damage van be virtually eliminated by moving away from and other bodies of water, since time out of mind, people have lived and worked by the water to seek the sustenance and capitalize on the gains of cheap and easy travel and commerce by being near water. That humans continue to inhabit areas threatened by flood damage is evidence that the perceived value of living near the water exceeds the cost of repeated periodic flooding.

“……..,it is not significant flood unless such escapes of water endanger land areas used by man…..” (paragraph 2) The underline word is closest in meaning to….

Digestive System

The digestive system is made up of body parts that digest food. These body parts breakdown food into small particles so that the body can use it.

The digestive system is mainly a long tube that begins at the mouth. Other parts of this tube include the stomach and the intestines. When food is swallowed, it moves through this tube. It is ground and mixed with liquids produce by the body. These liquids, called digestive juices, have chemicals in them that help breakdown the food. When the tiny bits of food go into the stomach, they are churned to break them down even more. Then the food bits go into the small intestine, a long tube below the stomach.

The small intestine finishes the job of digesting food. The food is broken down into very tiny bits. They are so small that they can pass into the blood through the wall of the small intestine. The blood carries them to other parts of the body.

What’s left from the food goes into the large intestine. It is a long tube, too. The large intestine stores waste that the body can not use. There the waste becomes solid called feces. The feces leave the body through the rectum at the end of the large intestine.

The correct statement based on the text is …

Digestive System

The digestive system is made up of body parts that digest food. These body parts breakdown food into small particles so that the body can use it.

The digestive system is mainly a long tube that begins at the mouth. Other parts of this tube include the stomach and the intestines. When food is swallowed, it moves through this tube. It is ground and mixed with liquids produce by the body. These liquids, called digestive juices, have chemicals in them that help breakdown the food. When the tiny bits of food go into the stomach, they are churned to break them down even more. Then the food bits go into the small intestine, a long tube below the stomach.

The small intestine finishes the job of digesting food. The food is broken down into very tiny bits. They are so small that they can pass into the blood through the wall of the small intestine. The blood carries them to other parts of the body.

What’s left from the food goes into the large intestine. It is a long tube, too. The large intestine stores waste that the body cannot use. There the waste becomes solid called feces. The feces leave the body through the rectum at the end of the large intestine.

All the statements are correct except …

Digestive System

The digestive system is made up of body parts that digest food. These body parts breakdown food into small particles so that the body can use it.

The digestive system is mainly a long tube that begins at the mouth. Other parts of this tube include the stomach and the intestines. When food is swallowed, it moves through this tube. It is ground and mixed with liquids produce by the body. These liquids, called digestive juices, have chemicals in them that help breakdown the food. When the tiny bits of food go into the stomach, they are churned to break them down even more. Then the food bits go into the small intestine, a long tube below the stomach.

The small intestine finishes the job of digesting food. The food is broken down into very tiny bits. They are so small that they can pass into the blood through the wall of the small intestine. The blood carries them to other parts of the body.

What’s left from the food goes into the large intestine. It is a long tube, too. The large intestine stores waste that the body cannot use. There the waste becomes solid called feces. The feces leave the body through the rectum at the end of the large intestine.

“The food is broken down into very tiny bits” (Paragraph 3). What is the similar meaning of the underlined word?

Digestive System

The digestive system is made up of body parts that digest food. These body parts breakdown food into small particles so that the body can use it.

The digestive system is mainly a long tube that begins at the mouth. Other parts of this tube include the stomach and the intestines. When food is swallowed, it moves through this tube. It is ground and mixed with liquids produce by the body. These liquids, called digestive juices, have chemicals in them that help breakdown the food. When the tiny bits of food go into the stomach, they are churned to break them down even more. Then the food bits go into the small intestine, a long tube below the stomach.

The small intestine finishes the job of digesting food. The food is broken down into very tiny bits. They are so small that they can pass into the blood through the wall of the small intestine. The blood carries them to other parts of the body.

What’s left from the food goes into the large intestine. It is a long tube, too. The large intestine stores waste that the body cannot use. There the waste becomes solid called feces. The feces leave the body through the rectum at the end of the large intestine.

Based on the text organization the second paragraph belongs to …