题目内容
Normally a student must attend a certain number of courses in order to graduate, and each course which he attends gives him a credit (学分) which he may count towards a degree. In many American universities the total work for a degree consists of thirty-six courses each lasting for one semester (学期). A typical course consists of three classes per week for fifteen weeks; while attending a university a student will probably take four or five courses during each semester. Normally a student would expect to take four years attending two semesters each year. It is possible to spread the period of work for the degree over a longer period. It is also possible for a student to move between one university and another during his degree course, though this is not in fact done as a regular practice.
For every course that he follows, a student is given a grade, which is recorded, and the record is available for the student to show to prospective(预期的) employers. All this imposes a constant pressure and strain of work, but in spite of this some students still find time for great activity in student affairs. Elections to positions in student organizations arouse much enthusiasm (热情). The effective work of maintaining discipline is usually performed by students who advise the academic authorities (权威). Any student who is thought to have broken rules, for example, by cheating has to appear before a student court. With the enormous numbers of students, the operation of the system does involve a certain amount of activity. A student who has held one of these positions of authority is much respected and it will be of benefit to him later in his career.
1. Normally a student would at least attend ______ classes per week.
A. 36 B. 12 C. 20 D.15
2. According to the first passage an American student is allowed ______.
A. to live in a different university
B. to take a particular course in a different university
C. to live at home and drive to classes
D. to get two degrees from two different universities
3. American students are usually under pressure of work because ______.
A. their academic performance will affect their future careers
B. they are heavily involved in student affairs
C. they have to observe university discipline
D. they want to run for positions of authoring
4. Some students are enthusiastic for positions in student organizations probably because_____.
A. they hate the constant pressure and strain of their study
B. they will then be able to stay longer in the university
C. such positions help them get better jobs
D. such positions are usually well paid
BBAC
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Fruit also makes up a flowering plant. It carries the seeds . The purpose of fruit is to protect a plant’s seeds and help them get spread about. Wind and water spread seeds .So do animals when they eat fruit and drop the seeds .
There are two main types of fruit: fleshy and dry. Fleshy fruits are soft and juicy , the way we usually think of fruits . Peaches ,plums ,and apples are all fleshy fruits . Dry fruits are thin and hard . Grains like wheat and rice , or nuts are dry fruits.
You’ve eaten seedless oranges and grapes . How can they be fruits? It’s because people have changed the way they grow fruit. They can now grow seedless fruit . Seedless fruit comes from special plants called hybrids(杂交生物体) . A hybrid is made by combining two varieties of a fruit to form a new variety . This hybrid grows and produces seeds . But the plants grown from these seeds are seedless . These plants cannot reproduce themselves.
A tomato is a vegetable , right? No , it’s actually a fruit . Other food we think of as vegetables—such as squash , peppers ,and eggplant—also are fruit . They’re fruit because they carry seeds and develop from flowers . Here’s another surprise . Scientists classify the tomato as a berry(浆果) . In addition , they don’t consider some fruits we call berries to be true berries because a berry is normally a type of fruit with a lot of seeds inside it . Technically , a strawberry , isn’t a berry , because it has its seeds on the outside . The red part is just the tip of the strawberry stem that’s enlarged.
Fruits are a source of nourishing(滋养) substances that keep us alive and healthy . For example , they contain many vitamins , especially vitamins A and C, and many minerals . They also provide fibre for a healthy digestive system and carbohydrates that the body needs to make energy.
| Title： | |
| Basic knowledge | Being of a flowering plant and carrying seeds. Protecting a plant’s seeds and helping spread them about. Mainly on wind , water and animals to spread. |
| Fleshy fruit :Juicy and , like peaches , plums ,apples ,etc . Dry fruit : Thin and hard , like wheat ,rice , nuts ,etc . | |
| Fruit seeds | Coming from a ,which is made by combining two kinds of fruit to form a new kind. |
| Some surprises | Tomato , squash ,peppers and eggplant are fruits because they carry seeds and develop from . Some fruits like strawberry aren’t technically berries because they have seeds on the . |
| Being to humans | Keeping people alive and . Providing vitamins , fiber and carbohydrates. |
Paparazzi, or "paps", are photographers who take pictures of famous people when they are not at the center of public attention. Paps are different from professional photographers or journalists because they never take ordinary photos.
The goal for paparazzi is to get pictures that no one else will get and then sell the pictures to the buyer who offers the most money —normally a small newspaper, magazine or website.
There is no law against paparazzi taking pictures in public places. However, there are laws that protect certain individuals. For example, child protection laws stop improper (不合适的) pictures of anyone under 16 from being published.
There is also no law that stops paparazzi from following celebrities (名人) and taking their pictures either. However, if paps are secretly following them and taking pictures of their faces, they could get into trouble.
Most paparazzi hang out on streets and hot spots for celebrities, waiting for the opportunity to take a picture of a star. Many stay on the streets until the early hours of the morning when celebrities are leaving nightclubs and looking a little worse for wear. However, some have other ways to make sure they get pictures. Many paps are in contact with "informers" who know the locations of celebrities at any given time. They then pass the information on to paparazzi. An informer could be anyone —from a restaurant waiter to a salesman.
Most of the time, paparazzi get a bad reputation for following celebrities. But sometimes stars or their managers will contact paps themselves and tell them exactly where and when they will go.
What a love-hate relationship between paparazzi and celebrities!
【小题1】Which of the following things paparazzi might do would be against the law?
| A．Taking pictures of famous people in public places. |
| B．Getting unsuitable pictures of a 10-year-old actress published. |
| C．Following a famous woman singer secretly and taking her pictures. |
| D．Hanging out at the places where celebrities often appear. |
| A．get the only first-hand pictures |
| B．sell the pictures to a big newspaper |
| C．make friends with famous people |
| D．know the locations of celebrities |
| A．how paparazzi get the pictures |
| B．how dangerous paparazzi’s job is |
| C．how much paparazzi pay for the pictures |
| D．how paparazzi contact informers |
| A．Paparazzi always take pictures when famous people are tired. |
| B．Stars hate paparazzi and don’t want to be followed. |
| C．Paparazzi and famous people rely on each other sometimes. |
| D．Informers might get paparazzi into trouble. |
American researchers have developed a technique that may become an important tool in fighting AIDS virus from attacking its target-cells in the body's defense system．When AIDS virus enters the blood，it searches for blood cells called T4 lymphocytes(淋巴细胞)．The virus connects to the outside of T4 lymphocytes．Then it forces its way inside．There it directs the cells' genetic material to produce copies of the AIDS virus．This is how AIDS spreads．
Researchers think they may be able to stop AIDS from connecting to T4 ceils．When AIDS virus finds a T4 cell，it actually connects to a part of the cell called CD4 protein．
Researchers want to fool the virus by putting copies or clones of the CD4 protein into the blood．This way the AIDS virus will connect to cloned protein instead of the real ones．Scientists use genetic engineering methods to make the clones．Normally a CD4 protein remains on the T4 cell at all times；the AIDS virus must go to it．
In a new technique，however，the cloned CD4 protein is not connected to a cell．It floats freely，so a lot more can be put into the blood to keep the AIDS virus away from real CD4 protein on T4 cells．One report says the．AIDS virus connects to cloned protein just as effectively as it connects to real protein．That report was based on tests with blood cells grown in labs．The technique is just now beginning to be tested in animals．If successful，it may be tested in humans within a year．
【小题1】The new technique can .
| A．cure AIDS |
| B．kill the AIDS virus |
| C．prevent the AIDS virus from spreading |
| D．produce new anti-AIDS cells |
| A．itself |
| B．the blood cells |
| C．the CD4 protein |
| D．the genetic material of T4 lymphocytes |
| A．cloned protein stays On the T4 cells |
| B．it connects to cloned protein more effectively |
| C．cloned protein is made by genetic engineering methods |
| D．cloned protein floats freely，and many more can be put into the blood |
| A．The new technique has been tested in labs． |
| B．The new technique is being tested in animals． |
| C．The new technique may be tested in humans． |
| D．The new technique is now under clinic test． |
| A．AIDS-a deadly disease |
| B．A new technique in fighting AIDS |
| C．The spread of AIDS virus |
| D．The cloned CD4 protein |