根据It is dangerous for humans--(近距离观察) the wolves.可知句子考查It is dangerous for sb to do sth表示对某人来说做某事是危险的,take a look at表示看,观察,close表示亲密的,紧密的. 故填to take a close look at.人类近距离观察狼是很危险的.做这类题型,首先根据所给汉语明确句子所要考查的单...
Explain why they are dangerous to cells. Why do humans need only oxygen to survive? Why datp is toxic to mammalian cells? (4-5 line answer) Describe the condition which makes oxygen toxic. Explain how inhaling increased amounts of CO2 affects pulmonary ventilation. Humans cannot survive for ...
Question: Carbon monoxide binds to hemoglobin more readily than oxygen. Explain why this is dangerous to humans. Carbon Monoxide: Carbon monoxide is a molecule formed by combining a carbon atom with a single oxygen atom. CO is the symbol of carbon monoxide. C...
【题目】Fish live in water. They use their special organ(器官) called gills(腮) for breathing. Some fish are dangerous to humans. Here are the world’s most dangerous fishes. Electric Eel(电鳗) — It is a South American fish. Electric eels are long and usually gray-brown in color. The...
根据第二段Biodiversity is necessary for all living things,including humans.However,it is dangerous because of human activities such as deforestation,pollution,and climate change.(生物多样性对包括人类在内的所有生物都是必要的。然而,由于森林砍伐、污染和气候变化等人类活动,生物多样性是危险的...
解答答案是B.考查danger的词性变化和短语.danger是名词,危险;dangerous是形容词"危险的";in danger处于…危险中.句意:老虎,曾经对人类来说是一种危险的动物,现在正处于危险的情况之中.故B正确. 点评解答此类题目,首先要掌握重要词汇的相关变形及固定搭配,然后根据语境选择正确的答案. ...
It is also not dissolved because it is insoluble in water. It causes heavyocean plastic pollutionand reduces water flow on Earth. It results in filthy water that breeds flies, mosquitos, and dangerous pests that carry diseases like malaria and dengue. ...
The more oil and coal we bum, the more CO2 is pumped into the atmosphere and the more we tip the balance. Leading climate scientists say a target of 350 parts per million (ppm) of CO2 might avoid dangerous climate change. We’re currently at 390 ppm and projected to hit 650 ppm by ...
Many people think of sharks as dangerous monsters.But human beings pose a far greater danger to these creatures than they do to us.Although shark attacks do occur,they are quite(1) A.On the other hand,according to one research,humans kill 100 million sharks every year.This n...
or at least its immediate environment. In its special report on carbon capture and storage, the IPCC said that by far the biggest risk comes from potential leaks. A sudden and large release of CO2 would be extremely dangerous. In the air, a CO2 concentration of around 10% is deadly, b...