单选题. Stress may be defined as the response of the body to any demand. Whenever people experience something pleasant or unpleasant, we say they are under stress. We call the pleasant kind "eustress", the unpleasant kind "distress". People sometimes compare our lives with that of the caveman who didn't have to worry about the stock market or the atomic bomb. They forget that the caveman worried about being eaten by a bear or about dying of hunger—things that few people worry about today. It's not that people suffer more stress today; it's just that they think they do. It is inconceivable that anyone should have no stress at all. Most people who are ambitious and want to accomplish something live on stress. They need it. But excessive stress is by all means harmful. Worse, chronic exposure to stress over a long time may cause more serious diseases and may actually shorten your life. The most frequent causes of distress in man are psychological—lack of adaptability, not having a code of behavior. So the secret of coping with stress is not to avoid it, but to do what you like to do and what you are made to do, at your own rate. For most people, it is really a matter of learning how to behave in various situations. The most important thing is to have a code of life, to know how to live.1. The modern man is suffering ______.

单选题30. I don't like him because he always ______ when others are talking.

单选题20. He is so kind and easy-going that the kids go ______ him in a big way.

单选题.6.

单选题19. Plastic bags are useful for holding many kinds of food ______ their cleanness, toughness and low cost.

单选题22. The higher a rocket flies, ______ air it meets.

单选题1.

单选题30. The reason I didn't attend the lecture was simply ______ I got a bad cold that day.

单选题11. Stopping pouring dirty water into the river is ______ the factory has to solve at present.

单选题27. The President ______ on television tonight.

单选题24. Almost everyone of us could see her anxiety from the ______ on her face.

单选题 Unfortunately

单选题24. A well written composition ______ good choice of words and clear organization among other things.

单选题7. Whether we will go for an outing this Saturday ______ on whether the weather is fine.

单选题5. A ship was reported ______ off the east coast of Kenya in February, 2018.

单选题16. ______ you offered him!

单选题51. He spent his early life in Sri Lanka ______ moving to England.

单选题18. Much has been written on the virtues of natural childbirth, but little research has been done to ______ these virtues.

单选题36. It is necessary to ______ a large vocabulary in learning a language.

单选题 ______ from heart trouble for years