years ago, children watched only about two hours and 40 minutes of TV each day.

Why the increase? Experts (专家)say more TV shows today are focused,_or aimed, at kids.

Some people want to limit (限制) kids' TV time. Researchers say that children who watch TV shows for more than three hours a day do not do as well in school. However, some programs can help kids learn. One example is BrainSurge. Some people say the show teaches kids facts.

How do you know whether a TV show can make you smart? Think about what you learn from watching, says Aletha Huston. She is a TV expert. But, she warns, don't spend too much time watching. "Limit the amount you watch. Get off the couch and do something else."

TV Guide

This pie chart (饼状图) shows how long kids ages 6－11 use different types of TV technology each week.

39．The underlined word "focused" can be replaced by ________.

A．aimed B．unusual C．suitable D．pleasant

40．What is the main idea of the text?

A．BrainSurge helps kids learn facts.

B．Kids do not watch proper TV shows.

C．Kids today watch more TV than they did before.

D．More TV shows today are created for kids ages 6－11.

41．According to the pie chart, kids spend the least time using________.

A．Video games B．VCR C．DVD D．TV

42．How many kinds of TV technology are mentioned in the chart?

A．Three. B．Four. C．Five. D．Six.

　　　　　　　　　　　　　　　　D

Watching news about the environment on TV can be sad. The problems seem so big that it's difficult to imagine how one single person can do anything about them. Rebecca Hosking, however, thought differently.

Rebecca is a wildlife camerawoman and she was filming a documentary (纪录片) for the BBC in the Pacific Ocean when she saw something that made her cry - hundreds of birds that had died because they had accidentally eaten the plastic that was thrown into the sea. Beaches on Pacific islands that should have been the most beautiful places in the world were covered with plastic toys, drinks bottles, pens - every plastic thing you can think of.

Rebecca decided she had to do something. Back at home she thought about what she could do to help solve the problem of plastic. In her hometown of Modbury, she asked local shopkeepers to stop using plastic bags in their shops.

Plastic bags are used everywhere in Britain - every supermarket, every shop. The numbers are amazing. Britain uses nearly 17 billion plastic bags each year. And the bags can take hundreds of years to break down because they are chemical rather than natural so each year the sea and the environment become more and more polluted.

To Rebecca's surprise, the shopkeepers agreed and Modbury became the first plastic