TOEFL SINAVINA YÖNELİK TESTLER

TOEFL SINAVINA YÖNELİK TESTLER



Passage 58.   Several factors cause fatigue, but in general, they come down to two main causes: lack of fuel or food and the excessive accumulation of by-products of activity. Muscle activity uses up stores of glycogen or sugar. It also must have oxygen, for a muscle deprived of it will soon 'cease to contract. Lactic acid and carbon dioxide are the chief by-products of muscle activity, but there are also toxins from other sources which may help produce fatigue. Some of these toxins may come from bodily infections and some may be absorbed from breathing or from the digestive process. But in addition to these factors, there are certain causes of fatigue which are more or less obscure. Some of these are less physiological than psychological, such as lack of interest in what you are doing. When you do something that bores you, you tire easily; if you are interested in your work, you forget the amount of energy you put into it. You also tire more quickly when standing than when you are walking, for in walking, each leg rests half of the time.   Mark the best choice   1.   What does they (Line 1) refer to?





Passage 58.   Several factors cause fatigue, but in general, they come down to two main causes: lack of fuel or food and the excessive accumulation of by-products of activity. Muscle activity uses up stores of glycogen or sugar. It also must have oxygen, for a muscle deprived ofit will soon 'cease to contract. Lactic acid and carbon dioxide are the chief by-products of muscle activity, but there are also toxins from other sources which may help produce fatigue. Some of these toxins may come from bodily infections and some may be absorbed from breathing or from the digestive process. But in addition to these factors, there are certain causes of fatigue which are more or less obscure. Some of these are less physiological than psychological, such as lack of interest in what you are doing. When you do something that bores you, you tire easily; if you are interested in your work, you forget the amount of energy you put into it. You also tire more quickly when standing than when you are walking, for in walking, each leg rests half of the time.   Mark the best choice      2. What does the phrase come down to two main causes (Line 1)mean?





Passage 58.   Several factors cause fatigue, but in general, they come down to two main causes: lack of fuel or food and the excessive accumulation of by-products of activity. Muscle activity uses up stores of glycogen or sugar. It also must have oxygen, for a muscle deprived ofit will soon 'cease to contract. Lactic acid and carbon dioxide are the chief by-products of muscle activity, but there are also toxins from other sources which may help produce fatigue. Some of these toxins may come from bodily infections and some may be absorbed from breathing or from the digestive process. But in addition to these factors, there are certain causes of fatigue which are more or less obscure. Some of these are less physiological than psychological, such as lack of interest in what you are doing. When you do something that bores you, you tire easily; if you are interested in your work, you forget the amount of energy you put into it. You also tire more quickly when standing than when you are walking, for in walking, each leg rests half of the time.   Mark the best choice     3. What does deprived of (Line 3) most probably mean?





Passage 58.   Several factors cause fatigue, but in general, they come down to two main causes: lack of fuel or food and the excessive accumulation of by-products of activity. Muscle activity uses up stores of glycogen or sugar. It also must have oxygen, for a muscle deprived ofit will soon 'cease to contract. Lactic acid and carbon dioxide are the chief by-products of muscle activity, but there are also toxins from other sources which may help produce fatigue. Some of these toxins may come from bodily infections and some may be absorbed from breathing or from the digestive process. But in addition to these factors, there are certain causes of fatigue which are more or less obscure. Some of these are less physiological than psychological, such as lack of interest in what you are doing. When you do something that bores you, you tire easily; if you are interested in your work, you forget the amount of energy you put into it. You also tire more quickly when standing than when you are walking, for in walking, each leg rests half of the time.   Mark the best choice       4. What does muscle activity produce?





Passage 58.   Several factors cause fatigue, but in general, they come down to two main causes: lack of fuel or food and the excessive accumulation of by-products of activity. Muscle activity uses up stores of glycogen or sugar. It also must have oxygen, for a muscle deprived ofit will soon 'cease to contract. Lactic acid and carbon dioxide are the chief by-products of muscle activity, but there are also toxins from other sources which may help produce fatigue. Some of these toxins may come from bodily infections and some may be absorbed from breathing or from the digestive process. But in addition to these factors, there are certain causes of fatigue which are more or less obscure. Some of these are less physiological than psychological, such as lack of interest in what you are doing. When you do something that bores you, you tire easily; if you are interested in your work, you forget the amount of energy you put into it. You also tire more quickly when standing than when you are walking, for in walking, each leg rests half of the time.   Mark the best choice            5.What can for (Line 3) in for a muscle deprived of it... be best replaced by?    







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