Scientists who study the climate are still arguing about how fast the earth is warming and how much it will warm, but they do agree that the earth is warming and that it will keep warming if we don’t do anything about it.
Scientists agree that the burning of fossil fuels (化石燃料) like oil and coal cause greenhouse gases to escape into the air and that these gases are causing most of the warming. Another cause is deforestation (cutting down trees) . Trees soak up carbon dioxide, one of the greenhouse gases, from the air.
There are already some changes happening because of global warming. Sea level is rising and some animals are already moving to new homes. It’s already too late to stop global warming completely.
If the warming gets worse, as scientists expect, there may be some kinds of plants and animals that is disappearing because they can’t move to new homes. There may be more storms and floods. Sea level may rise so much that people have to move away from the coasts. Some areas may become too dry for farming.
Global warming is a very difficult problem to fix. People are having a hard time agreeing on what to do about it. For example, everyone agrees that wasting energy is a bad thing to do. But some people think that the federal government (联邦政府) should make laws about it, while other people think it should be up to each person or business to decide what to do.
Many states and businesses in the United States are not waiting until the federal government decides what to do. They have already started working on the problem.
【小题1】What are the scientists arguing about in the passage?
A. How fast is the earth warming?                  B. How much will the earth warm?
C. The earth will keep warming if we don’t do anything about it.    D. Both A and B.
【小题2】What does the underlined phrase “soak up” mean?

1.The above job ads are probably from_________．

    A．a newspaper      B．a story      C．a science book     D．a guide book

2.If the owner of the large house asks a cleaner to tidy his house twice a week，how much will the cleaner get in a month?_______．

    A．$120            B．$160         C．$200             D．$240

3.If you are a college student of English who enjoys writing during your summer holiday，you will be more interested in the job in_________．

    A．ad(1)            B．ad(2)         C．ad(3)            D．ad(4)

(1)WANTED                                 (2)SUMMER JOB

Are you working hard? Do you like to       Do you like to talk with people? Do you like to

meet people? If your answer is "Yes", then we  write stories? If you want to work for our

have a job for you as a waiter.                            magazine as a reporter,  please call Karen at

Call AL Hotel at 556779                     558366

(3)HELP WANTED                   (4)CLEANER WANTED

Do you like babies? Can you look after one         Can you make a large house clean and

baby for two days? If you are sure to take good  tidy? If you hope to get the job paid at $20

care of it, call us at 766588.              once a week, call us this evening.

$ 80 0rmore                             8: 00-20: 20

Today Hurry                           Tell: 833800

1.The above job ads are probably from_______.

A. a newspaper      B. a story       C. a science book  D. a guide book

2.If the owner of the large house asks a cleaner to tidy his house twice a week,  how much will the cleaner get in a month?_______.

A. $120                            B. $160                    C. $200                   D. $240

3.If you are a college student of English who enjoys writing during your summer holiday,  you will be more interested in the job in_______.

A. ad(l)        B. ad(2)        C. ad(3)        D. ad(4)