[单项选择]"______ the United States " "Yes, we went there on business last month."
A. Did you go
B. Have you gone to
C. Have you ever been to
D. When did you visit

[单项选择]

If you ever went to the United States to study in a college or a university, one of the first things you would have to do is to open a checking account. If you went to a bank to open an account, you would probably go through most of the following procedures. Not all banks have the same requirements for opening new accounts, of course, and the routine may vary somewhat.
First you would go to the New Account Department and fill out a signature card. In order to open an ac- count, you would have to offer proof of your identity(身份). A passport is one of the best kinds of identification to have, but other kinds are accepted, one of the most common being a driver’s license.
You would need to have a permanent address In the city, and you would also be asked to supply the name of a permanent resident who is willing to recommend you. For this purpose you could use the name of your landlord or landlady, for example, or the name of the foreign student advisor at the un
A. are completely the same for all banks
B. are completely different for all banks
C. vary a little from bank to bank
D. have to be accepted by the customers

[单项选择]The machine which we bought from the United States several years ago needed.
A. being repaired
B. to repair
C. repaired
D. to be repaired

[单项选择]From the passage we learn that the United States_________.
A. tricked their allies into attacking Iran
B. took military action to capture Iranian kidnappers
C. undertook a rescue mission with the help of their allies
D. carried out an attack to rescue some Americans from the Iranian kidnappers

[单项选择]We must ______ the United States five years in order to apply for citizenship.
A. reside in
B. accommodate
C. invade
D. abandon

[单项选择]How many states are there in the United States


A. Thirteen.
B. Fifty.
C. Fifty one.
D. Sixty.

[单项选择]The United States is composed of fifty states, two of ______ are separated from the others by land or water.
A. them
B. that
C. which
D. those

[单项选择]

The United States government publishes guidelines for appropriate nutrient intakes These are known as the Recommended Dietary Allowances (RDAs) and are updated regularly based on new research in the science of nutrition. RDAs are suggested amounts of calories, protein, and some minerals and vitamins for an adequate diet. For other dietary substances, specific goals must await further research. However, for the U.S. population as a whole, increasing starch and fiber in our diets and reducing calories (primarily from fats, sugar, and alcohol) is sensible. These suggestions are especially appropriate for people who have other factors for chronic diseases such as family history of obesity, premature heart disease, diabetes, high blood pressure, and high blood cholesterol, or for those who use tobacco. Snacks can furnish about one-fourth of the calorie requirements among teenagers Those snacks should also furnish much of the day's allowances for protein, minerals, and vitamins. Sa
A. One-half.
B. One-third.
C. One-fourth.
D. Less than one-fourth.