Our Muscles①When we think of muscles, we might often picture a bodybuilder with big arm and leg muscles. But our muscles do not have to look like that to work well.②As a matter of fact, every time we write our name, we use the 20 different muscles in our hand. Every time our heart beats, we use the our cardiac muscle(心肌). When eat our food, we use our tongue muscles. We even use muscle when we open and close our eye. In fact, every time we move, we use some of the muscles in our body.③A muscle is made of tiny fibers are packed together to make a single muscle .We all have the same number of muscles----about 700 or so .Men and women with big muscles simply have thicker bundles of fibers.④There are three different types of muscles in our body .Smooth muscles are the ones that we cannot control .They work quietly to keep our body running .Also, they are the oneself that help us to absorb our food .The cardiac muscle makes the heart pump blood in and out .Skeletal muscles are the ones that we can control .These are the muscles that we use to raise our handset, or ride our bicycles.⑤Even our face often uses muscles .But if we want to save our energy, try smiling instead of frowning .Remember that it Takeshi 17 muscles in our face to smile, but 43 muscles to frown!Smiling uses less energy than______.

Biological ClockWhen the sun rises on a warm and sunny day, you can see some flowers open up. When they close late in the afternoon, other flowers open.Biological rhythms（生物节律）, like the opening and closing of flowers, happen all over nature. But not all of them are daily rhythms. Some, like the beating of our heart , happen every second____1_____.Scientists use the term biological clock to describe the timing that controls biological rhythms_____2____.In some animals it is probably controlled by the brain. In plants and other living things that have no brain, it must be something else.The migration of animals happens when a signal is sent out. For example, when days become shorter, birds leave the northern parts of the world and fly south where it is warm_____3____.Humans also have biological clocks that control their daily rhythms. When people travel by plane from one continent to another, they often cross many time zones. Their internal clocks don’t seem to work correctly. We call this jet lag（时差）____4_____.People who work night shifts also have problems with their biological clocks. They may not be as active as people who work during the daytime.Biological clocks control many rhythms of life_____5____.Doctors are looking for new wayside to make traveling more comfortable and medical treatment more effective.1.___.

Biological ClockWhen the sun rises on a warm and sunny day, you can see some flowers open up. When they close late in the afternoon, other flowers open.Biological rhythms（生物节律）, like the opening and closing of flowers, happen all over nature. But not all of them are daily rhythms. Some, like the beating of our heart , happen every second____1_____.Scientists use the term biological clock to describe the timing that controls biological rhythms_____2____.In some animals it is probably controlled by the brain. In plants and other living things that have no brain, it must be something else.The migration of animals happens when a signal is sent out. For example, when days become shorter, birds leave the northern parts of the world and fly south where it is warm_____3____.Humans also have biological clocks that control their daily rhythms. When people travel by plane from one continent to another, they often cross many time zones. Their internal clocks don’t seem to work correctly. We call this jet lag（时差）____4_____.People who work night shifts also have problems with their biological clocks. They may not be as active as people who work during the daytime.Biological clocks control many rhythms of life_____5____.Doctors are looking for new wayside to make traveling more comfortable and medical treatment more effective.2.___.

Biological ClockWhen the sun rises on a warm and sunny day, you can see some flowers open up. When they close late in the afternoon, other flowers open.Biological rhythms（生物节律）, like the opening and closing of flowers, happen all over nature. But not all of them are daily rhythms. Some, like the beating of our heart , happen every second____1_____.Scientists use the term biological clock to describe the timing that controls biological rhythms_____2____.In some animals it is probably controlled by the brain. In plants and other living things that have no brain, it must be something else.The migration of animals happens when a signal is sent out. For example, when days become shorter, birds leave the northern parts of the world and fly south where it is warm_____3____.Humans also have biological clocks that control their daily rhythms. When people travel by plane from one continent to another, they often cross many time zones. Their internal clocks don’t seem to work correctly. We call this jet lag（时差）____4_____.People who work night shifts also have problems with their biological clocks. They may not be as active as people who work during the daytime.Biological clocks control many rhythms of life_____5____.Doctors are looking for new wayside to make traveling more comfortable and medical treatment more effective.3.___.

Biological ClockWhen the sun rises on a warm and sunny day, you can see some flowers open up. When they close late in the afternoon, other flowers open.Biological rhythms（生物节律）, like the opening and closing of flowers, happen all over nature. But not all of them are daily rhythms. Some, like the beating of our heart , happen every second____1_____.Scientists use the term biological clock to describe the timing that controls biological rhythms_____2____.In some animals it is probably controlled by the brain. In plants and other living things that have no brain, it must be something else.The migration of animals happens when a signal is sent out. For example, when days become shorter, birds leave the northern parts of the world and fly south where it is warm_____3____.Humans also have biological clocks that control their daily rhythms. When people travel by plane from one continent to another, they often cross many time zones. Their internal clocks don’t seem to work correctly. We call this jet lag（时差）____4_____.People who work night shifts also have problems with their biological clocks. They may not be as active as people who work during the daytime.Biological clocks control many rhythms of life_____5____.Doctors are looking for new wayside to make traveling more comfortable and medical treatment more effective.4.___.

Biological ClockWhen the sun rises on a warm and sunny day, you can see some flowers open up. When they close late in the afternoon, other flowers open.Biological rhythms（生物节律）, like the opening and closing of flowers, happen all over nature. But not all of them are daily rhythms. Some, like the beating of our heart , happen every second____1_____.Scientists use the term biological clock to describe the timing that controls biological rhythms_____2____.In some animals it is probably controlled by the brain. In plants and other living things that have no brain, it must be something else.The migration of animals happens when a signal is sent out. For example, when days become shorter, birds leave the northern parts of the world and fly south where it is warm_____3____.Humans also have biological clocks that control their daily rhythms. When people travel by plane from one continent to another, they often cross many time zones. Their internal clocks don’t seem to work correctly. We call this jet lag（时差）____4_____.People who work night shifts also have problems with their biological clocks. They may not be as active as people who work during the daytime.Biological clocks control many rhythms of life_____5____.Doctors are looking for new wayside to make traveling more comfortable and medical treatment more effective.5.___.

Life Is DifficultWhat makes life difficult is that the process of facing and solving problems is a painful one. Problems cause___1___, anger, fear or despair. These are___2___feelings, often as painful as any kind of physical pain. And since life___3___an endless series of problems, it is___4___difficult and is full of pain as well as joy.Yes it is in this process of___5___and solving problem that life has its meaning. Problem call forth our___6___and our wisdom. It is only because of problem that we grow___7___and spiritually. When we want to encourage the___8___of the human spirit, we encourage the human capacity to solve problems, just as in school we deliberately___9___problems for our childrento solve. It is through the pain of confronting and resolving that we learn. It is for this reason that___10___people learn not to fear but actually to welcome problems and actually to welcome the pain of problems.A. meeting      E. wise         I. posesB. courage      F. take          J. alwaysC. careful       G. sadness   K. uncomfortableD. growth       H. set            L. mentally

Are There Truths In Dreams? Imagine waking up after dreaming (dream) about a terrible plane crash. The next day you will make a plane journey that you have __1__ (plan) long before. Will you get on the plane?A survey shows that you may not cancel your trip. But your dream will probably influence your __2__(thought) during the journey. You may feel ___3__ (worry) and find the trip much ___4__ (long) than before. So dream may influence what we are ___5__ (real) doing while we are awake.The explanation of dream is still a(an) ___6__ (clear) area. A team of researcher are entering a new field of studies: Do dreams actually influence our ___7___ (behave)? Over the past few years, They have ___8__(do) studies in different cultures and found out that dreams contain some ___9__ (hide) truths: dreams affect the way people live and work. But researchers also tell people not to be __10___ (easy) influenced by their dreams.1___.

Are There Truths In Dreams? Imagine waking up after dreaming (dream) about a terrible plane crash. The next day you will make a plane journey that you have __1__ (plan) long before. Will you get on the plane?A survey shows that you may not cancel your trip. But your dream will probably influence your __2__(thought) during the journey. You may feel ___3__ (worry) and find the trip much ___4__ (long) than before. So dream may influence what we are ___5__ (real) doing while we are awake.The explanation of dream is still a(an) ___6__ (clear) area. A team of researcher are entering a new field of studies: Do dreams actually influence our ___7___ (behave)? Over the past few years, They have ___8__(do) studies in different cultures and found out that dreams contain some ___9__ (hide) truths: dreams affect the way people live and work. But researchers also tell people not to be __10___ (easy) influenced by their dreams.2___.

Are There Truths In Dreams?Imagine waking up after dreaming (dream) about a terrible plane crash. The next day you will make a plane journey that you have __1__ (plan) long before. Will you get on the plane? A survey shows that you may not cancel your trip. But your dream will probably influence your __2__(thought) during the journey. You may feel ___3__ (worry) and find the trip much ___4__ (long) than before. So dream may influence what we are ___5__ (real) doing while we are awake.The explanation of dream is still a(an) ___6__ (clear) area. A team of researcher are entering a new field of studies: Do dreams actually influence our ___7___ (behave)? Over the past few years, They have ___8__(do) studies in different cultures and found out that dreams contain some ___9__ (hide) truths: dreams affect the way people live and work. But researchers also tell people not to be __10___ (easy) influenced by their dreams.3___.