阅读理解。
Car sharing is another way to drive green which is gaining in popularity, especially in urban areas. People
who may not drive every day but still want a car to run errands (差事) or drive on weekends benefit most
from car sharing. Car sharing is usually run by a service like Zipcar, though there are non-profit (非营利的)
and informal car sharing services. Members pay a monthly fee and have access to an entire fleet of cars when
they need one. The cars are parked in fixed spots around the city, so members only need to make a reservation,
and then go to the pickup spot.
Car sharing has major environmental benefits because it reduces the number of cars on the road. Members
don't drive just because they are in a car. They plan trips, and if they don't need a car, they don't use one. Still,
a car is available to them if they need to make a big trip to the grocery store, pick someone up at the airport or
if they want to go to the beach for the day. Members also benefit by having access to a car without any of the
headaches of ownership. They usually don't have to pay for the gas, insurance or maintenance (保养), and the
monthly membership fee is less than a typical car payment. So if you really want to go green but aren't ready to
totally give up a car yet, car sharing may be the way to go.
If you still need to get around, but want to go even greener than sharing a car, share a bus!
1. The author intends to tell us that car sharing _____.
A. has become the most popular way to go to work
B. has become the best way to cut living costs
C. is becoming more and more popular in cities
D. is becoming popular both in urban and rural (乡村的) areas
2. We can learn from the passage that _____.
A. Zipcar can't help you if you are running urgent errands
B. Zipcar, different from other services, is aimed at green driving with no profit
C. Zipcar is a company supplying car sharing services for a monthly payment
D. Zipcar is a company providing formal car sharing free
3. The second paragraph mainly tells us _____.
A. why people will share a car
B. why car sharing benefits the environment
C. why car sharing is cheaper than owning a car
D. why a car is available to members
4. Which of the following is NOT mentioned in the passage?
A. Car sharing has become a new trend (趋势).
B. Car sharing can save you the headaches of ownership.
C. Bus sharing is even greener than car sharing.
D. Zipcar is the largest company offering car sharing services.
请根据科学家的研究解释椒花蛾黑化现象：
