用超声测位仪向海底垂直发射声波,经过3s后收到回波,如果海水中声音的平均传播速度为1500m/s,则此处海水的深度是km。 答案:【1】2.25Directions: The following people
are expressing their thoughts (1--5) to show their concern for food,
environment and so on. After that are pieces of related information (A--F). Now
decide which piece of information would be most suitable for the thought and
idea mentioned in questions61---65 and mark your answer letter (A---F) on your
answer sheet. There is one extra paragraph which you do not need to use.
______1. How I was struck by the clear water and fresh air in my
childhood! But everything has changed, that is, the clear water and fresh air
are nowhere to be found again as they were. Above all, a great deal of waste
hardly rots away.
___2. More and more people are beginning to have a good knowledge of
the importance of a safer and cleaner environment, which in turn forces the
business to be cleaned up.
______ 3. Organic products are getting more and more popular among people,
but we should know the fact that organic products might also have something to
do with pesticides (农药).
_____4.I’m very much fond of growing some vegetables of my own in my small
garden, for many vegetables on sale in markets are actually becoming more and
more dangerous as a result of widespread pesticides.
______5. Nowadays it is very convenient for consumers to find and buy
green food in supermarkets as they are clearly marked.
A. “Organic produce is always
better,” Gold said. “The food is free of pesticides, and you are generally
supporting family farms instead of large farms. And more often than not it is
locally grown and seasonal, so it is more tasty.” Gold is one of a growing
number of shoppers buying into the organic trend, and supermarkets across
Britain are counting on more like him as they grow their organic food business.
B. Market research shows that
Gold and others who buy organic food can generally give clear reasons for their
preferences - but their knowledge of organic food is far from complete. For
example, small amounts of pesticides can be used on organic products. And about
three quarters of organic food in Britain is not local but imported to meet
growing demand. “The demand for organic food is increasing by about one third
every year, so it is a very fast-growing market,” said Sue Flock, a specialist
in this line of business.
C. Many cities around the world
today are heavily polluted. Careless methods of production and lack of consumer
demand for environment-friendly products have contributed to the pollution
problem. One result is that millions of tons of glass, paper, plastic, and
metal containers are produced, and these are difficult to get rid of.
D. However, today, more and more
consumers are choosing “green” and demanding that the products they buy should
be safe for the environment. Before they buy a product, they ask questions like
these: “Will this shampoo damage the environment?” “Can this metal container be
reused or can it only be used once?”
E. Only a few years ago, it was
impossible to find green products in supermarkets, but now there are hundreds.
Some supermarket products carry labels (标签) to show that the product is green. Some
companies have made the manufacturing (制造) of clean and
safe products their main selling point and emphasize it in their advertising.
F. The concern for a safer and
cleaner environment is making companies rethink how they do business. No longer
will the public accept the old attitude of “Buy it, use it, throw it away, and
forget it.” The public pressure is on, and gradually business is cleaning up
its act.