阅读理解（六）
1、 Getting less sleep has become a bad habit for most American kids. According to a new survey(调查)by the National Sleep Foundation, 51% of kids aged 10 to 18 go to bed at 10 pm or later on school nights, even though they have to get up early. Last year the Foundation reported that nearly 60% of 7- to 12-year-olds said they felt tired during the day, and 15% said they had fallen asleep at school.黄瓜英文
How much sleep you need depends a lot on your age. Babies need a lot of rest; most of them sleep about 18 hours a day! Adults need about eight hours. For most school-age children, ten hours is ideal(理想的). But the new National Sleep Foundation survey found that 35% of 10- to 12-year-olds get only ven or eight hours. And guess what almost half o
f the surveyed kids said they do before bedtime? Watch TV.
"More children are going to bed with TVs on, and there are more opportunities(机会)to stay awake, with more homework, the Internet and the phone," says Dr. Mary Carskadon, a sleep rearcher at Brown University Medical School. She says the activities at bedtime can get kids all excited and make it hard for them to calm down and sleep. Other experts say part of the problem is chemical. Changing levels of body chemicals called hormones not only make teenagers’ bodies develop adult characteristics, but also make it hard for teenagers to fall asleep before 11 pm.
english是什么意思 Becau sleepiness is such a problem for teenagers, some school districts have decided to start high school class later than they ud to. Three years ago, schools in Edina, Minnesota, changed the start time from 7:25 am to 8:30 am. Students, parents and teachers are plead with the results.
1.What is the new National Sleep Foundation survey on?
A.American kids' sleeping habits.
B.Teenagers' sleep-related dias.
C.Activities to prevent sleeplessness.
D.Learning problems and lack of sleep.
2.How many hours of sleep do 11-year-olds need every day?
A.7 hours.
B.8 hours.
C.10 hours.
D.18 hours.
3.Why do teenagers go to sleep late according to Carskadon?
A.They are affected by certain body chemicals.
B.They tend to do things that excite them.
C.They follow their parents' examples.
D.They don't need to go to school early.
we are the millers
2、高中数学课本 Steven Stein likes to follow garbage trucks. His strange habit makes n when you consider that he’s an environmental scientist who studies how to reduce litter, includi
ng things that fall off garbage trucks as they drive down the road. What is even more interesting is that one of Stein's jobs is defending an industry behind the plastic shopping bag.
美国大学留学 Americans u more than 100 billion thin film plastic bags every year. So many end up in tree branches or along highways that a growing number of cities do not allow them at checkouts(mentioned收银台) . The bags are prohibited in some 90 cities in California, including Los Angeles. Eyeing the headwinds, plastic-bag makers are hiring scientists like Stein to make the ca that their products are not as bad for the planet as most people assume.
空军工程大学分数线 Among the bag makers' argument: many cities with bans still allow shoppers to purcha paper bags, which are easily recycled but require more energy to produce and transport. And while plastic bags may be ugly to look at, they reprent a small percentage of all garbage on the ground today.come along
The industry has also taken aim at the product that has appeared as its replacement:
reusable shopping bags. The stronger a reusable bag is, the longer its life and the more plastic-bag u it cancels out. However, longer-lasting reusable bags often require more energy to make. One study found that a cotton bag must be ud at least 131 times to be better for the planet than plastic.
Environmentalists don't dispute(质疑) the points. They hope paper bags will be banned someday too and want shoppers to u the same reusable bags for years.
新概念英语第二册1.What has Steven Stein been hired to do?
A.Help increa grocery sales.
B.Recycle the waste material.
C.Stop things falling off trucks.
D.Argue for the u of plastic bags.
2.What does the word “headwinds”in paragraph 2 refer to?
同事 英文
A.Bans on plastic bags.
B.Effects of city development.
C.Headaches caud by garbage.
D.Plastic bags hung in trees.
3.What is a disadvantage of reusable bags according to plastic-bag makers?
A.They are quite expensive.
B.Replacing them can be difficult.
C.They are less strong than plastic bags.
D.Producing them requires more energy.
4.What is the best title for the text?
A.Plastic, Paper or Neither
B.Industry, Pollution and Environment
C.Recycle or Throw Away
D.Garbage Collection and Waste Control
