题目

下列说法中正确的是：A．物体吸收热量，其内能必增加B．外界对物体做功，物体内能必增加C．物体吸收热量，同时对外做功，其内能可能减少D．物体温度不变，其内能也一定不变  答案：C解析:略 Idioms(成语) are phrases and sentences that do not mean exactly what they say. Even if you know the meaning of each word you see or hear, you may not understand the idiom because you don't understand the culture behind it.For example, if an American boy asks his mother what's for dinner tomorrow, she may say “I'll play it by ear”, that means she doesn't have plans for dinner and she will decide later. “Play by ear” used to mean playing music using the sheet music(活页乐谱), but now people often use it when they're not talking about music.There're many idioms in English. If you learn to use them, your English will be more vivid and colorful. English idioms are more common in spoken English. They can be difficult to remember sometimes. Next time when you hear somebody saying to you, “Give me a hand”, you don't necessarily reach out your hand to him/her, but you do need to be helpful. And when the situation is out of hand, you usually can do very little to manage all that. What about a green hand? It's not about the color of your hand! You're a green hand when you are very new at your work and don't have much experience. If you and your partner always work together hand in glove, you two certainly work together very well.Can you guess the meanings of some common English idioms to do with parts of your body?1.An idiom is _______.A. a phrase or a sentence that means exactly what the words sayB. a phrase or a sentence that doesn't mean exactly what every word saysC. so difficult that nobody can understandD. something to do with parts of your body2.If a mother says “I’ll play it by ear” to talk about the dinner, she means _______.A. she will cook dinner while listening to music at the same timeB. she doesn't hear what others are talking about.C. she will play music using the sheet music instead of cooking dinnerD. She doesn't have plans for dinner and will decide later3.When one says “Can you give me a hand?”, he means _______.A. he needs to hold your hand.B. he works well with youC. he needs your helpD. he is a new comer and can't help with the situation4.What does the word “vivid” mean?A. 生动的 B. 恰当的 C. 独特的 D. 有意义的5.Here are four common English idioms to do with parts of your body and their meanings.Can you match them?1) to learn something by heart a. to depend on oneself2) to have sticky fingers b. to know something very well3) to stand on one's own feet c. to do something secretly4) to go behind someone's back d. to have the habit of stealingA. 1-b; 2-a; 3-d; 4-c B. 1-b; 2-d; 3-a; 4-cC. 1-c; 2-b; 3-a; 4-d D.1-c; 2-d; 3-b; 4-a