【难句分析 】 * Seven-spot ladybugs are native to Europe but were introduced to North America in the mid- 1900s to control aphid populations.七星瓢虫原 产于欧洲,但在20世纪中期被引人北美洲以控 制蚜虫种群 本句的主语是Seven-spot ladybugs, 后面的 are native were introduced: 式语 to contro...
to the passage the following statements are supported EXCEPT . A.there are more than 450kinds of ladybugs in North America,including native ones B.only some imported ladybugs are helpful to the local plants C.soybeans,fruits and berries are favorites of aphids D.pecan trees are common in the...
根据第四段Seven﹣spotted ladybugs are native to Europe but were brought to North America in the mid﹣1900s.七斑瓢虫原产于欧洲,但在20世纪中期被带到北美.可知,B. 七星瓢虫从北美被带到欧洲;错误.故选B.(4)D.主旨大意题.阅读全文,根据文章内容可知,本文主要介绍了瓢虫,包括七星瓢虫,瓢虫的发展和瓢虫...
There are about 5,000 different kinds of ladybugs(瓢虫)in the world. They are also known as lady beetles or ladybird beetles. They come in many different colors and patterns, but the best-known in North America is the seven-spotted ladybug, with its shiny, red-and-black body. In many...
why.(4)They once lived all across North America./ All across North America.(5)Will you be the next person to find one? (1)(A)ladybugs。代词指代题。根据文中There are thousands of different kinds of ladybugs。 可知有数以千计不同种类的瓢虫,此处them指代瓢虫。(E)pictures(of ladybugs)。
C(朝霞原创)around north America. kids and adults are looking for ladybugs( ) When they find a ladybug they take a picture it. Then they send the picture to scientists. Why? For the Lost Ladybug Project There are thousands of different kinds ladybugs Some have many spots (斑点);others ha...
Seven-spotted ladybugs are native to Europe but were brought to North America in the mid-1900s.Ladybugs are most active from spring until fall. When the weather turns cold, they look for a warm place to hibernate, such as in rotting logs, under rocks, or even inside houses. T hese ...
Seven-spot ladybugs are native to Europe but were introduced to North America in the mid-1900s to control aphid populations. These ladybugs are happy in many different habitats (栖息地), including grasslands, forests, cities, suburbs and along rivers. During spring and summer, when they are mo...
These bugs have another trick to avoid danger too—remain still and pretend to be dead. Simple, eh? Birds are ladybugs’ main predators, but they also fall victims (牺牲品) to frogs, spiders and dragonflies. Seven-spot ladybugs are native to Europe but were introduced to North America in ...
A. T here are more than 450 kinds of ladybugs in North America,including native ones.B. Only some imported ladybugs are helpful to the local plants.C. Soybeans,fruits and berries are favorites of Aphids.D. Pecan trees are common in the south of America.4. According to the experts,...