单选题He used to get up late, ______?A. did not heB. did heC. didn't heD. use he

单选题We substitute fish ______ meat several times a week.A. forB. withC. toD. and

单选题In the meantime, the question facing the committee is whether such research is the costs.

单选题Vegetables are cheap ______ when they are in season. A. to buy B. to buy them C. buying D. to be bought

单选题Beijing is well______its beautiful scenery and the Great Wall. A. known as B. known to C. known about D. known for

单选题______ their country has plenty of oil, ours has none.

单选题All their attempts to ______ the child from the burning building were in vain.

单选题He has arrived late ______.

单选题I (like) this house (with) a beautiful garden (in front), but I don"t have enough money to buy (that).

单选题We were deeply impressed by her important ______ to the success of the project.

单选题Sorry, officer. I______at 80 miles but I didn't see any sign in the area telling people how fast fhey can drive.A. should not driveB. shouldn't have drivenC. mustn't driveD. can't drive

单选题The next moment, ______ she had time to realize what was happening, she was hit over the head.

单选题The pain will go away ______.A. by and by B. by any chanceC. all over D. at present

单选题The man denied ______ into the neighbor's garden and ______ his cow.

单选题If you don"t put the milk in the refrigerator, it may ______.

单选题______ is well known to all, China will be an advanced and powerful country in the near future.

单选题One study shows that Americans prefer to answer with a brief "Yes", "No", "Sure", or the very popular "Yeah" rather than with a longer reply. But brief replies do not mean Americans are impolite or unfriendly to some extent. Very often, Americans are in a hurry and may greet you with a single word "Hi", indeed; this is a greeting you will hear again and again during your stay in the United States. It is used by everyone, regardless of rank, age or occupation. However, those who are accustomed to longer greetings may require a little more time before they feel comfortable with American simple talk. Americans sometimes use plain talk when they are uncomfortable. If people praise them or thank them in an especially polite way, they may become uncomfortable and not know what to say in reply. They don"t want to be impolite or rude, you can be sure that they liked what was said about them. Except for certain holidays, such as Christmas, Americans don"t usually give gifts. Thus, you will find Americans embarrassed as they accept gifts, especially if they have nothing to give in return. They are generally a warm but informal people.