根据第一段中的“North America’s birds are disappearing from the skies at a rate that’s shocking even to ornithologist.(北美的鸟类正以惊人的速度从天空中消失,这让鸟类学家感到震惊。)”可知,北美的鸟类正在迅速地从天空中消失。故选C。【2】推理判断题。根据第二段中的“ecosystems in disorder ...
【题目】North America's birds are disappearing from the skies at a rate that's shocking even toornithologists(鸟类学家).Since the 1970s,the continent has lost 3 billion birds, nearly 30% of the total, and even common birds suchas sparrows and blackbirds are in decline, U.S. and ...
根据第二段中“Among birds on the IUCN Red List of Threatened Species, almost 400 birds worldwide have had their conservation status changed for the worse in the past three decades (moving from vulnerable to threatened, or threatened to endangered) — five times more than the number of bird ...
This insect was probably first domesticated in ancient Egypt, where it is depicted in tomb paintings, and introduced to North America in the early 17th century. It uses pheromones for almost all of its interactions and communications, including mating, defending themselves, producing food, and warni...
This insect is native to North America, though populations have been introduced to South America as well through being imported from California. Becauseaphids are at the center of their diet,they are often used in pest-control methods against them. ...
They cover six per cent of the Earth's surface. The biggest rainforests are in South America, Afric a and South East Asia. There aren't any rainforests in Europe or North America.More than 4,000 types of birds and more than 1,000,000 types of insects (昆虫) live in the rainforests....
根据第一段“Objects in the night sky are disappearing from view because of light pollution, according to a new study. Outdoor lighting from street lamps, office buildings and vehicle headlights leads to sky less bright, which is when the night sky gets brighter. The brighter it is at night...
They’re “gross and slimy and flaccid and wiggling.” But parasites can be just as important as more charismatic animals—and many may be on the verge of disappearing.
MORE: Two-thirds of birds in North America at risk of extinction due to climate change: Report Some species have recovered significantly after conservation efforts Scientists and bird enthusiasts are witnessing the fruits of their conservation labor, as populations of some bird species continue t...
根据“There are rainforests in many parts of the world, but the biggest forests are in South America, Africa and Southeast Asia.”可知,最大的森林位于南美洲、非洲和东南亚。故选B。 (2)题详解: 词义猜测题。根据“About 75 percent of animals live in rainforests. There are many beautiful birds...