To get your family working and learning together~ and also help some beautiful insects in spring一try a backyard butterfly garden. With just a little planning, you can create an attractive habitat for butterflies.

The biggest problem facing butterflies is destruction of habitat. Even if your garden offers just a few butterfly-friendly flowers in pots or containers, it can help the insects' population, just like chicken soup for a cold.

Choose special plants on which butterflies feed. Wherever you are, simple flowers such as daisies and violets can serve as butterfly-friendly snacking spots. Some milkweeds can be espe­cially tasty to some butterflies. They provide a place for them to stop, too.

Understand that caterpillars(毛毛虫），the butterflies' babies, are going to eat the plants in the garden, including some vegetables you may have planned to serve at your dinner table. However, you'll be rewarded for the sacrifice when caterpillars turn into flying butterflies.

Avoid using pesticides(杀虫剂) on vegetable gardens for the sake of butterflies. Put tomato leaves overnight in water, and then spray the solution onto plants as an effective and natural pesti­cide that won't harm butterflies.

Butterfly gardening can be budget-friendly, too. Don't overlook smaller, less costly flowers that will attract tiny but lovely butterflies. Plants native to your region are most beneficial to the environment and require less maintenance.

Butterflies enjoy being exposed to the sun. Put flat rocks near feeding spots for them to rest. While butterflies can get most water they need from feeding, many like gathering around wet places. Simply create a damp area of ground which butterflies can easily see, and where they are sheltered from the wind.

Don't be disappointed if you don't draw a lot of butterflies immediately. Just keep at it, and they'll find your yard.

66. What's the main idea of the passage?

A. Ways butterflies set up their habitat in spring.

B. An advertisement promoting butterflies to gardeners.

C. Approaches to feeding butterflies at low cost.

D. Advice on creating a butterfly-friendly garden.

67.  The reason for choosing special flowers and milkweeds is that they _______

A. provide butterflies with their food

B. serve as a spot to rest for butterflies

C. harvest vegetables for dinner table

D. taste delicious to some caterpillars

68.  The underlined sentence in Paragraph 4 suggests that _______

A. butterflies always live on caterpillars

B. keeping a butterfly garden makes no sense

C. it's worthwhile to keep a butterfly garden

D. caterpillars may eat some butterflies

69.  The underlined word "solution" in the fifth paragraph refers to _______

A. solid chemical from the tomato leaves

B. liquid used to kill the harmful insects

C. a method used to solve a problem

D. a device used to catch butterflies

70.  According to the passage, _______.

A. cheaper wild flowers should be avoided

B. a butterfly garden can be planned in a cheap way

C. native plants are usually expensive to keep

D. having a butterfly garden must be very costly

To get your family working and learning together~ and also help some beautiful insects in spring一try a backyard butterfly garden. With just a little planning, you can create an attractive habitat for butterflies.

The biggest problem facing butterflies is destruction of habitat. Even if your garden offers just a few butterfly-friendly flowers in pots or containers, it can help the insects' population, just like chicken soup for a cold.

Choose special plants on which butterflies feed. Wherever you are, simple flowers such as daisies and violets can serve as butterfly-friendly snacking spots. Some milkweeds can be espe­cially tasty to some butterflies. They provide a place for them to stop, too.

Understand that caterpillars(毛毛虫），the butterflies' babies, are going to eat the plants in the garden, including some vegetables you may have planned to serve at your dinner table. However, you'll be rewarded for the sacrifice when caterpillars turn into flying butterflies.

Avoid using pesticides(杀虫剂) on vegetable gardens for the sake of butterflies. Put tomato leaves overnight in water, and then spray the solution onto plants as an effective and natural pesti­cide that won't harm butterflies.

Butterfly gardening can be budget-friendly, too. Don't overlook smaller, less costly flowers that will attract tiny but lovely butterflies. Plants native to your region are most beneficial to the environment and require less maintenance.

Butterflies enjoy being exposed to the sun. Put flat rocks near feeding spots for them to rest. While butterflies can get most water they need from feeding, many like gathering around wet places. Simply create a damp area of ground which butterflies can easily see, and where they are sheltered from the wind.

Don't be disappointed if you don't draw a lot of butterflies immediately. Just keep at it, and they'll find your yard.

66. What's the main idea of the passage?

A. Ways butterflies set up their habitat in spring.

B. An advertisement promoting butterflies to gardeners.

C. Approaches to feeding butterflies at low cost.

D. Advice on creating a butterfly-friendly garden.

67.  The reason for choosing special flowers and milkweeds is that they _______

A. provide butterflies with their food

B. serve as a spot to rest for butterflies

C. harvest vegetables for dinner table

D. taste delicious to some caterpillars

68.  The underlined sentence in Paragraph 4 suggests that _______

A. butterflies always live on caterpillars

B. keeping a butterfly garden makes no sense

C. it's worthwhile to keep a butterfly garden

D. caterpillars may eat some butterflies

69.  The underlined word "solution" in the fifth paragraph refers to _______

A. solid chemical from the tomato leaves

B. liquid used to kill the harmful insects

C. a method used to solve a problem

D. a device used to catch butterflies

70.  According to the passage, _______.

A. cheaper wild flowers should be avoided

B. a butterfly garden can be planned in a cheap way

C. native plants are usually expensive to keep

D. having a butterfly garden must be very costly

Damage to Ozone Layer Gets Worse

    In the middle of winter, when snow is falling in many parts of the United States, scientists have sounded a warning to people who plan to spend many hours in the sun this summer．The warning: The sun's summertime rays are more dangerous than once thought.

    A team of scientists from 80 nations recently reported to the United Nations that a layer of ozone（臭氧层）in the atmosphere, which protects humans from harmful levels of ultraviolet（紫外线）radiation, will be thinner over the United States this summer．The thinner layer allows more ultraviolet rays from the sun to reach Earth．The extra amount of ultraviolet radiation could cause an increase in the number of cases of skin cancer.

    Scientists first became concerned about the layer in the mid-1980s when a hole was discovered in the layer above Antarctica during the winter．The hole was caused in chemicals used in refrigerators and air conditioners．When these chemicals are sent out into the atmosphere, they produce gases that destroy the ozone.

    Concern about the protective ozone layer rose more recently when data from satellites and ground stations showed that ozone levels were dropping over areas other than Antarctica．Low ozone levels were recorded in the spring and summer over the United States and over other populated areas in the world.

    Although many countries have already begun stopping the use of ozone-destroying chemicals, the new findings are expected to advance the timetable for a total ban of the chemicals.

The scientists have observed the ozone layer ______．

    A．since 1980                     B．since last winter

    C．for more than 20 years            D．for about one year

The ozone layer in the atmosphere can ______.

    A．do a lot of good to human beings in many ways

    B．protect humans from diseases caused by bad weather

    C．do a lot of harm to human beings in the summer-time

    D．protect humans from harmful levels of ultraviolet radiation

Scientists first found that there was a hole in the ozone layer ______.

    A．above Arctic during the winter in the mid-1980s

    B．above Antarctica during the winter in the mid-1980s

    C．over somewhere in the north of the equator in 1980

    D．over the USA in the summertime in the mid-1980s

The damage to the ozone layer was caused by ______.

    A．the changeable weather          B．ozone-destroying chemicals

C．chemicals from refrigerators      D．chemicals from air conditioners

How to protect children Web fans from unsuitable material on-line while encouraging them to use the Internet has long been discussed in the U.S.

For some parents, the Internet can seem like a jungle, filled with danger for their children. But jungles contain wonders as well as dangers and with good guides, some education, and a few precautions(预防措施), the wilds of the Internet can be safely navigated(航行). “Kids have to be on-line. If we tell our kids they can’t have access(机会) to the Internet, we’re cutting them off from their future,” said an expert.

Most kids have started to use search engines. Many of them are great for finding tons of interesting Internet sites, and they can also locate places where you might not want your kids to go. There are search engines designed just for kids. A certain software contains only sites that have been selected as safe. The most popular way to limit access would be to use what is known as a “content screener(过滤器)”. But this can’t be wholly reliable(可靠), and the best thing parents can do is to talk to their kids and let them know what is OK or not OK to see or do on the Internet. Another way is that mum or dad is nearby when the child is surfing(浏览) the Internet.

A few other tips

●Don’t put the PC in a child’s room but keep it in an area where mum or dad can keep an eye on things. That also makes the Internet more of a family activity.

●Ask your child what he or she has been doing and about any friends they make on-line.

●Tell your child not to give on-line strangers personal information, especially like address and phone number.

●And tell your children never to talk to anyone they meet on-line over the phone, send them anything, accept anything from them or agree to meet with them unless you go along.

The passage is mainly about the subject of _______.

A. American children going on-line             B. Internet in America

C. appreciating Internet                              D. opposing children’s on-line

The best way to protect children from improper material is _______.

A. to install(安装) a content screener on the computer

B. to buy some search engines for the children

C. to be nearby when they are surfing the Internet

D. to talk to the children and persuade them to tell right from wrong

Which of the following is right according to the passage?

A. Surfing the Internet is the best method of educating children.

B. Children’s not having access to Internet may have effect on their progress.

C. Using a content screener is most reliable for keeping children having access to Internet.

D. Searching engines can help children to select materials fit for them.

According to the passage, we can infer that _______.

A. soft wares fit for children want programming

B. a child who is on-line is in danger

C. Internet is a jungle full of danger

D. Internet contains a lot of harmful sites

How to protect children Web fans from unsuitable material on-line while encouraging them to use the Internet has long been discussed in the U.S.

For some parents, the Internet can seem like a jungle, filled with danger for their children. But jungles contain wonders as well as dangers and with good guides, some education, and a few precautions(预防措施), the wilds of the Internet can be safely navigated(航行). “Kids have to be on-line. If we tell our kids they can’t have access(机会) to the Internet, we’re cutting them off from their future,” said an expert.

Most kids have started to use search engines. Many of them are great for finding tons of interesting Internet sites, and they can also locate places where you might not want your kids to go. There are search engines designed just for kids. A certain software contains only sites that have been selected as safe. The most popular way to limit access would be to use what is known as a “content screener(过滤器)”. But this can’t be wholly reliable(可靠), and the best thing parents can do is to talk to their kids and let them know what is OK or not OK to see or do on the Internet. Another way is that mum or dad is nearby when the child is surfing(浏览) the Internet.

A few other tips

●Don’t put the PC in a child’s room but keep it in an area where mum or dad can keep an eye on things. That also makes the Internet more of a family activity.

●Ask your child what he or she has been doing and about any friends they make on-line.

●Tell your child not to give on-line strangers personal information, especially like address and phone number.

●And tell your children never to talk to anyone they meet on-line over the phone, send them anything, accept anything from them or agree to meet with them unless you go along.

The passage is mainly about the subject of _______.

A. American children going on-line             B. Internet in America

C. appreciating Internet                              D. opposing children’s on-line

The best way to protect children from improper material is _______.

A. to install (安装) a content screener on the computer

B. to buy some search engines for the children

C. to be nearby when they are surfing the Internet

D. to talk to the children and persuade them to tell right from wrong

Which of the following is right according to the passage?

A. Surfing the Internet is the best method of educating children

B. Children’s not having access to Internet may have effect on their progress.

C. Using a content screener is most reliable for keeping children having access to Internet.

D. Searching engines can help children to select materials fit for them.

According to the passage, we can infer that _______.

A. soft wares fit for children want programming

B. a child who is on-line is in danger

C. Internet is a jungle full of danger

D. Internet contains a lot of harmful sites