[单项选择]Questions 21 and 22 are based on the following news. At the end of the news item, you will be given 10 seconds to answer the questions.
Now, listen to the news.
The casualties for the rival Muslim militias were
A. three.
B. twenty.
C. ninety-four.
D. ninety-seven.

Questions are based on the following conversation on transportation in 21st century.
M: Talking about the 21st Century, as far as transportation is concerned, I think there’re going to be huge changes in the way people use cars.They’ll probably have made laws about what kind of car you can own and when you can use it.
W: And I bet it’ll be impossible for people to use cars whenever they like. There’ll be just too many of them on the roads.The air will be so seriously polluted that nobody will be able to breathe normally.
M: Exactly. People will have to rely on other modes of transportation — especially trains.
W: Why do you say that
M: Well, we won’t be able to use caps, and airports take too much space.With the supply of land for airports shrinking around the world, there are going to be fewer airports and fewer plane flights.That leaves trains.
W: Huh. So do you thinkthere will be more efficient
A. The land for airports will be used for other purposes.
B. There are too many people travelling by car.
C. Many people have a fear for air travel.
D. There will be faster way" of travelling than travelling by air.

Questions are based on the following dialogue between a student and a librarian.
Librarian: Can I help you
Student: Yes, I am a bit confused. My sociology class is supposed to read a chapter in a book called Sociology and the Modern Age. According to the course plan, the book is in the library, but I haven’t been able to find it.
Librarian: Do you have your course plan with you May I see it
Student: Yes, uh....I put it in the front of my sociology notebook. Oh, here it is.
Librarian: Let me see. Oh yes. Your professor has placed this book on reserve, That means you cannot find it on the shelves in its usual place.You need to go to a special room called the reserve room. It’s down the hall and to the right.
Student: I’m sorry. I still don’t understand what you mean by on reserve.
Librarian: You see, your professor wants every one in the class to read the chapter. If one student removes the book from th
A. It needs to be preserved until reprints come out.
B. It is the only copy of the kind and must be kept intact.
C. It is the professor’s own book put in the library.
D. It needs to be read by every one of the class.

Questions are based on the following monologue.
Today, we discuss one way foreign students earn money while attending graduate school in the United States. They can work as teaching assistants.
Teaching assistants are known as T-A’s for short. They usually work about twenty hours each week. They are paid to help college professors teach large numbers of students in lower level classes. Generally, the professor gives a talk or lecture to all the students in a large class one or two times a week. The teaching assistant leads another, smaller, class each week. The teaching assistant gives tests and reads any homework or reports the students may be required to write. T-A’s also meet with individual students seeking help. They attend teaching meetings. And they help organize laboratory equipment if they are helping to teach a science class.
Most American colleges and universities must honor legal requirements when employing
A. They must agree to work 20 hours a week.
B. They must have no other source of money.
C. They must have good scores in their- specialty.
D. They must speak very good English.