How many new species of monkeys have been identified in Brazil alone over the last year? A. Eight. B. Nine. C. Ten. D. Eleven.正确答案:B解析:事实细节题。本题询问去年只在巴西一国就新发现多少种猴子。本题答案可以从文章第二段末句得出。选项B为正确答案。 相关知识点: ...
()60. -How many species of animals do you think will be threatened with extinction when the surroundings around are damaged by mankind?-I expect quite a few. A. there being S B. there to be C. there have been D. there be 相关知识点: ...
Many scientists believe that intelligent life forms may exist on other planets and messages should be sent into space to contact these life forms. Other scientists think this is a bad idea because these life forms could be dangerous. Discuss both these views and give your own opinion. Give rea...
解答 答案:D.根据真正主语how many animal species are in the danger of dying out可见空白处应为形式主语,纵观选项,唯有it可担当形式主语,故选D.注意区分主语从句B选项what…is 从句,就对了. 点评 本题考查it 形式主语,结合语义的基础上便能选出正确答案,同时要注意与主语从句不要混淆.练习...
With 1 million insect species named, this suggests that 80% remain to be discovered and that a greater focus should be placed on less-studied taxa such as many families of Coleoptera, Diptera, and Hymenoptera and on poorly sampled parts of the world. DNA tools have revealed many new species...
How many species of African violets are there? For many years the experts and the AVSA Handbook have said twenty to thirty. However, more recent research indicates that there are more likely only six with an additional ten subspecies. How can this be?Let's first take a look at the ...
单项选择题The world’s rainforests cover less than ten percent of the earth’s surface, but contain over forty percent of all plant and animal species. The biggest rainforest is in South America, it’s called the Amazon. Amazon is by far the largest remaining rainforest area left on our ...
题目When birds' habitat is destroyed,some species don't make it while others survive.But what happens at the very beginning of the process,just as a bird's habitat starts to change?Research in Argentina's Monte Desert has provided some answers.There are lots of trees,b...
How Many Days Can Different Species of Turtles Survive Without Food? How many days different species of turtles can survive without food varies, but they could last for even a couple of months. However, it is highly dependent on the surrounding environment and their metabolism. Some species can...
化学与人体健康密切相关：（1）市场有“铁强化酱油”、“含氟牙膏”、“高钙牛奶”、“加碘食盐”等商品，这里的铁、氟、钙、碘应理解为___（填编号）①元素②原子③分子④氧化物（2）妈妈每天为小明准备的食品有：奶类、豆类、鱼肉类、水果、蔬菜、面食等，这些食品中含有___等人体所需营养素（只需填写两种...