单选题Personality in Americans is further complicated by successive waves of immigration from various countries.

单选题Look after Your Voice Often speakers at a meeting experience dry mouths and ask for a glass of water. You can solve the problem by activating the saliva in your mouth. First gently bite the edges of your tongue with your teeth. or press your entire tongue to the bottom of your mouth and hold it there until the saliva flows. Or you can imagine that you are slicing a big juicy lemon and sucking the juice. Before you begin your talk, be kind to your voice. Avoid milk or creamy drinks which coat your throat. Keep your throat wet by drinking a little sweetened warm tea or diluted fruit juice. If you sense that you are losing your voice, stop talking completely. Save your voice for your speech. You may feel foolish using paper to write notes, but the best thing you can do is to rest your voice. If you need to see a doctor, perhaps you can get some advice from a professional singer. In the meantime, do not even talk in a low voice. What about drinking alcohol to wet your throat? I advise you not to touch alcohol before speaking. The problem with alcohol is that one drink gives you a little confidence. The second drink gives you even more confidence. Finally you will feel all-powerful and you will feel you can do everything, but in fact your brain and your mouth do not work together properly. Save the alcohol until after you finish speaking. Perhaps you want to accept the advice, but you may wonder if you can ever change the habits of a life time. Of course you can. Goethe, who lived before indoor skating rinks or swimming pools, said," We learn to skate in the summer and swim in the winter. " Take this message to heart and give yourself time to develop your new habits. If you are willing to change, you will soon be able to say that you will never forget these techniques because they became a part of your body.

单选题Please put up your hands if you have any questions.A. raiseB. reachC. waveD. told

单选题Enamel,the hardest substance in a human being's body,covers the entire crown of the tooth. A. whole B. inseparable C. superficial D. main

单选题Jack was dismissedA. fined B. firedC. exhausted D. criticized

单选题The photographs (evoked) strong memories of our holiday in France.

单选题In the book Autobiography of Values, the aviation hero Charles Lindbergh reveals his paradoxical and often sobering thoughts on life.A. contradictoryB. poignantC. mysticD. paramount

单选题Mary's Uperpetual/U moaning nearly drove me mad.

单选题The dentist has decided to take out the girl"s bad tooth.

单选题Philip Roth was hailed as a major new author in 1960.

单选题Mr. Johnson evidently regarded this as a great joke.

单选题An educationist should understand children's {{U}}psychology{{/U}} very well.

单选题When a liquid boils, it becomes a gas.A. vaporB. dangerC. fuelD. bubble

单选题Packaged, processed and restaurant foods are known to be

单选题It is well-known that time is money. That is the reason why almost everyone Umakes full use of/U their time.

单选题I have been trying to quit smoking.

单选题This is the identical room we stayed in last year.

单选题The president proposed that we should bring the meeting to a close.A. statedB. saidC. announcedD. suggested

单选题The illegal driver ignored the red traffic light and ran right into a car.A. brokeB. disregardedC. noticedD. misunderstood

单选题There are some things in the class the teachers will not put up with.A. tolerateB. contributeC. resistD. prohibit