A
Anyone who has gardened will be familiar with insects.You may not know them by name, but you know that they can do a lot of damage to plants, sometimes destroying them completely.But not all insects are bad.There are many beneficial insects that can help to fight those planteating insects in your garden.You can attract beneficial insects to your garden by providing specific plants just for them.Beneficial insects are like teenage boys.If you feed them, they will keep coming back for more.
There are a large variety of common plants and flowers that attract beneficial insects.Beneficial insects are not only attracted to plants which are infected with their insect prey, but they also tend to be selective about the plants on which they lay their eggs.Some of these plants may already be in your garden, and others are a worthy addition.
Plants with umbrellashaped flowers are very attractive to a number of beneficial insects.Queen Anne's lace and dill are examples of plants that produce blooms with an umbrella shape.
Green or brown lacewings and ladybugs will also appreciate the same umbrellashaped flowers.Lacewings prefer to lay their eggs in shady areas that are protected from the weather.They'll be happy to find some of their favourite plants in a quiet, protected corner of the garden.Lacewings lay eggs on their favorite host plants, with each tiny egg appearing on the end of a thin thread attached to a leaf.Learn to recognize the beneficial insects in your garden in both their adult and larval (幼虫的) stages so you don't neglectfully destroy these little garden helpers.Tachinid flies look like hairy house flies, and they lay their eggs on caterpillars (毛虫) that can do a lot of damage in a garden.Tachinid fly larvae will destroy corn earworms, cabbage worms and armyworms.
【语篇解读】 我们可以吸引益虫到花园里来控制病虫害，本文主要介绍益虫偏好的植物类型。
1．What is mainly talked about in the text?
A．How to protect beneficial insects.
B．How to tell beneficial insects from harmful ones.
C．What kinds of plants beneficial insects like most.
D．What beneficial insects can do for us.
C [综合分析全文可知，本文主要介绍益虫偏好的植物类型。]
2．We can attract beneficial insects by ．
A．giving them food often
B．providing proper plants
C．giving them money often
D．providing harmful insects
B [从文章第一段倒数第三句可知，主要靠在花园里种植特定的植物来吸引益虫。]
3．What kinds of plants do beneficial insects like most?
A．Plants with umbrellashaped flowers.
B．Plants with a lot of leaves.
C．Plants with sweet smells.
D．Plants with a lot of flowers.
A [从文章第三段可知，益虫最喜欢开伞状花的植物。]
4．Which of the following belong to beneficial insects?
A．Tachinid flies. B．Corn earworms.
C．Cabbage worms. D．Armyworms.
A [从文章第四段可知，寄生蝇的幼虫寄生在害虫体内，因此是益虫。]
