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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 ...
百度试题 结果1 题目4. How many known species of fish are in the Amazon River? A.6400. B.3000. C.48.相关知识点: 试题来源: 解析 B 反馈 收藏
How many new species of monkeys have been identified in Brazil alone over the last year? A. Eight. B. Nine. C. Ten. D. Eleven. 相关知识点: 试题来源: 解析 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。 答案:B...
Nowadays, there are many celebrities who are famous for their glamour and wealth rather than achievements and this sets a bad example for young people. To what extent do you agree or disagree? Give reasons for your answer and include any relevant examples from your own knowledge or experience....
违反《中华人民共和国食品安全法》的规定，经营未按规定进行检疫或者检疫不合格的肉类，或者生产经营未经检验或者检验不合格的肉类制品，尚不构成犯罪，但情节严重的，吊销许可证，并可以由公安机关对其直接负责的主管人员和其他直接责任人员予以何种处罚？（ ）
They have smoothed-out bodies and two appendages that are adjusted into flippers. Even though not exactly as adaptable as seals, a few dolphins can go at speeds of 29 km/h (18 mph) for short distances.[1] Dolphins utilize their cone-like molded teeth to catch quick-moving prey. ...
In the last decade, new methods of estimating global species richness have been developed and existing ones improved through the use of more appropriate statistical tools and new data. Taking the mean of most of these new estimates indicates that globally there are approximately 1.5 million, 5.5 ...
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...
Third, there is the possibility that the agnostids were parasites, living on and feeding off larger organisms. One reason that this seems possible is that there are many species of modern-day arthropods that exist as parasites, such as fleas,ticks, and mites. The agnostids might have lived on...