Boston is also studying microbes commonly found inside caves in other countries, such as Ukraine and the United States. These microbes appear to be impossible to kill. Boston said they show how difficult life on Earth can be.
30. The existence of the ancient microbes relies on _______.
A. surrounding insects B. diverse plants
C. eating minerals D. absorbing air
31. What can we infer about the caves in Naica from the passage?
A. The temperature in the caves is quite low.
B. The caves have been explored since they were formed.
C. The walls are covered by crystals.
D. The environment in the caves is difficult to adapt to.
32. What is the biologist Norine Noonan’s attitude towards the findings?
A. Neutral. B. Positive. C. Doubtful. D. Indifferent.
33. What’s the main idea of the passage?
A. Living organisms bring hope to scientific research.
B. Scientists discover 50,000-year-old “super life” in Mexico.
C. Microbes show great power to survive in terrible conditions.
D. Caves provide living environment for living organisms.
五、七选五
【2016年北京高考试题】The Science of Risk——Seeking
Sometimes we decide that a little unnecessary danger is worth it because when we weigh the risk and the reward, the risk seems worth tasking. _34__Some of us enjoy activities that would surprise and scare the rest of us. Why? Experts say it may have to do with how our brains work.
The reason why any of us take any risks at all might have to do with early humans. Risk-takers were better at hunting, fighting, or exploring. _35__ As the quality of risk-taking was passed from one generation to the next, humans ended up with a sense of adventure and a tolerance for risk.
So why aren’t we all jumping out of airplanes then? Well, even 200,000 years ago, too much risk-taking could get one killed. A few daring survived, though, along with a few stay-in-the-cave types. As a result, humans developed a range of character types that still exists today. So maybe you love car racing, or maybe you hate it. _36_
No matter where you are on the risk-seeking range, scientists say that your willingness to take risks increases during your teenage years. _37__To help you do that, your brain increases your hunger for new experiences. New experiences often mean taking some risks, so your brain raises your tolerance for risk as well.
_38__ For the risk-seekers a part of the brain related to pleasure becomes active, while for the rest of us, a part of the brain related to fear becomes active.
As experts continue to study the science of risk-seeking, we’ll continue to hit the mountains, the waves or the shallow end of the pool.
A. It all depends on your character.
B. Those are the risks you should jump to take.
C. Being better at those things meant a greater chance of survival.
D. Thus, these well－equipped people survived because they were the fittest.
E. This is when you start to move away from your family and into the bigger world.
F. However, we are not all using the same reference standard to weigh risks and rewards.
G. New brain research suggests our brains work differently when we face a nervous situation.
时时总结一下，进步更快哟！
寒假训练02 必修五 Unit 2 The United Kingdom
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