[简答题]In making investigations, we ought to get information about what similar items the competitors are offering on the market, what prices they are quoting (报价), what features their products have, who their regular customers are, etc.

[简答题]We have done things we ought not to have done and ____________(应该做的事情却没有做).

[单项选择]We have done things we ought to have undone and （） undone things we ought to have done.
A. leaving
B. left
C. will leave
D. leave

[填空题]What can we get from library We can get all kinds of______.

[单项选择]

We know that we have to pay for what we get. If we buy food, we know there will be a bill to pay. These are private bills. But there are also public bills that must be paid. Public bills are paid by the government. In turn, we get these services through taxes. What would happen if everyone in the city stopped paying taxes The water supply would stop; water might become unclean and impure. The streets might not be cleaned. There would be no police force to protect people and property. Schools would be closed. People would become sick and diseases might spread. We should not want to live in such a city. We all want pure water and food, clean streets and good schools. We want the police to prevent crime. The chief duty for every government is to protect persons and property. More than three quarters of the money spent by our government is used for this purpose. The next largest amount of public money goes to teach and train our citizens. Billions of dollars each year are spent on sc
A. By taxing public services.
B. By providing needed services.
C. By making people pay for private bills.
D. By collecting taxes.

[单项选择]We ought not suppose that "social" and "governmental" are______, for the differences in the two terms are both manifest and______.
A. homonymous … established
B. insidious… lucid
C. antonymous … considerable
D. synonymous… unique
E. coterminous… evident

[填空题]While making Karaoke tapes, we should see to it that the length of the intervals between tunes is more than ______ seconds.

[填空题]Before making a speech; we often need to make brief speaking notes. You can put them on cards no smaller than 150×100mm. Write in large and hold letters that you can see at a glance, using a series of headings to develop the information in sufficient details. The amount of information you include in your notes will depend on the complexity (复杂性) of the subject, your familiarity with it, and your previous speaking experience. Here are some steps for you to follow when preparing brief speaking notes.
First, you should write a summary, or an outline, of the project to be reported and the results achieved. Then an introduction follows. This includes background information and purpose of the project. Next comes discussion. In this part, what has been done, how it has been done and the results achieved should be dealt with. At the fourth step, you have two choices: one is the conclusion if the project is completed. The other is the future plan if the project is still in progress. At l

[填空题]

Notice Before making a speech, we often need to make brief speaking notes. You can put them on cards no smaller thanl50x 100mm.Write in large and b01d letters that you can see at a glance, using a series of brief headings to develop the information in sufficient detail. The amount of information you include in your notes will depend on the complexity (复杂性) of the subject, your familiarity with it, and your previous speaking experience. Here are some steps for you to follow when preparing brief speaking notes.
First, you should write a summary, or an outline, of the project to be reported and the results achieved. Then an introduction follows. This includes background information and purpose of the project. Next comes discussion. In this part, what has been done, how it has been done and the results achieved should be dealt with. At the fourth step, you have two choices: one is the conclusion if the project is completed. The other is the future plan if the project