[填空题]If we (know)（）the basic principles, we should have controlled the process even better.

[填空题]If we (know)（）the basic principles, we should have controlled the process even better.

[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 know we have to read "between the lines" to get the most out of anything. Marking up is also a useful practice, (76) you shouldn’t mark up a book which isn’t yours. Librarians (77) lend you books expect you to keep them clean, and you should. If you decide that I am right about the usefulness of marking books, you will have to (78) them.
There are three kinds of book owners. The first has all the standard sets and best sellers—unread, (79) . The second has a (80) many books—few of them read (81) , most of them dipped into, but all of them as clean and shiny as the day they were bought. The third has a few books or many every one of them (82) and dilapidated.
Why is (83) a book indispensable to reading First, it keeps you awake. I mean wide (84) . In the second place, reading if it is active, is thinking, and thinking (85) express itself in words. Finally, writing helps you remember th

[填空题]Patent systems as we know have been used as a social tool since the Renaissance.

[单项选择]A: I don’t know what we’d have done if you hadn’t come along. B: _____________.It was the least I could do.
A. It works well
B. I’m not sure
C. Don’t mention it
D. It’s very good

[单项选择]As we know, if we want to keep our health and have a strong body, our eating habits are very important in our daily life. There are times when most of us would rather eat sweets and ice cream than meat and rice. Actually, sweets and ice cream are not bad for the stomach if we eat them at the end of a meal. If we eat them before a meal, they may take away our appetite. Meanwhile, it is important for us to eat our meal at the same time each day. When we feel hungry, it shows that our bodies need food. When we feel angry or excited, we may not want to eat. When we are worried, we may not want to eat, either. A long time ago, in England, some judges used to decide whether a man was telling the truth by giving him some dry bread. If the man could not swallow the bread, it was a sign that he wasn’t telling the truth. Although this seems very strange and rather foolish, it is indeed an excellent way of finding out the truth. A man who is worrying about something has difficulty in swallowing a
A. a better appetite
B. to eat more food
C. a poor appetite
D. to eat nothing