题目内容

According to the World Health Organization, air pollution is ____ millions of deaths every year.

A. original fromB. suitable for

C. accessible toD. responsible for

D

【解析】

试题分析：考查短语辨析。A 来源于；B适用于；C可接近的；D为…负责，形成…的原因。句意：根据世界卫生组织的调查，空气污染每年会导致百万人的死亡。根据句意可判断其它3项与题意不符， 故选D。

考点：考查短语辨析

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the duty of taking good care of my parents, I have decided to work in Quanzhou, which is close to my hometown.

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When you come across difficulties, it is ______ of you to expect the worst.

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Many science fiction stories tell about explorers arriving in a new world. The explorers then use some kind of high-tech device to test for breathable air or signs of life. But here on Earth, science fiction is becoming reality through a new sampling technology called environmental DNA, or e-DNA for short. Scientists can use it to identify rare or invasive species, study bio-diversity or estimate fish populations with just a little air or water.

Ryan Kelly is an ecologist at the School of Marine and Environmental Affairs at the University of Washington in Seattle. He works in a laboratory there with other researchers. They study the genetic material released by living creatures. “Essentially we can take a sample of soil or air — and in our case — water, and we can sequence（to arrange the order of genes）the DNA out of it and tell you what is there.”

Ryan Kelly says he and his research team are studying water samples collected from Puget Sound. He says the cost of gene sequencing has “been reduced greatly in recent years.” That makes DNA testing more widely available.

Environmental DNA can be used in two ways. One is to identify the creatures that live in a certain place. The other is to confirm the presence or lack of a specific creature.

Caren Goldberg heads the new e-DNA lab at Washington State University in Pullman, Washington. She is one of the first biologists in the northwestern United States to take the technology from the testing phase to actually using it.

“It is extremely useful for species that are really hard to find. I have spent many hours looking for species that I was pretty sure were there — looking under rocks, looking in water, doing all kinds of surveys.”

Caren Goldberg sees e-DNA as a way to get answers more efficiently, safely and with less destruction compared to traditional survey techniques. Until recently, scientists depended on diving deep, netting or using an electric current to temporarily catch fish.

“We’re absolutely at this point where proof-of-concept has been established. I don't think everyone necessarily is ready for it yet, but I think the majority of people are.”

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Ms. Goldberg has used e-DNA testing to confirm the local extinction, disappearance, of a leopard frog in the American state of Idaho. She has also been asked to document the spread of the New Zealand mud-snail in the state of Washington. The creature has been found in lakes and other waterways across the state.

Now, the U.S. Bureau of Land Management wants Caren Goldberg to look for the Columbia spotted frog in two other western states. The rare amphibian is a candidate for the federal government's threatened species list.

Scientists working with the technology say they do not expect robots to replace field biologists anytime soon. But the old-fashioned field work could soon be more targeted.

A related research goal is to show how long environmental DNA can last and how far it can travel in different environments.

1.Paragraph One is intended as _____ of the passage.

A. the main idea

B. the introduction of the topic

C. a supporting detail of the main idea

D. a contrast of the main idea

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A. you are likely to find information about a species with a little air, water, or soil

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C. you are able to get answers more efficiently, safely though with more damage

D. the cost of gene sequencing has been reduced greatly in recent years.

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A. wild Yangtze giant soft-shell turtles

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C. the local extinction of a leopard frog

D. the spread of the New Zealand mud-snail

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C. too many candidates for E-DNA and the lasting time of E-DNA

D. robots and old-fashioned field work’s replacing E-DNA

5.The passage can be sorted as a(n) _____.

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A. will listenB. will be listening

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寒假中，你的父母以和你谈起报考大学的事儿，请你结合他们的意见和自己的想法写一篇英语短文，投稿到某中学生英语报，和大家分享你的看法。要点如下：

1、选择什么样的大学或专业？

2、选择的理由？(两点)

3、最后一个学期的打算？

注意：

1. 词数：不少于120词；

2. 开头已给出，但不计入总词数；

3. 可适当增加情节，以使行文连贯。

Dear Editor,

I’m writing to share my ideas about my future college or major.

Yours sincerely

Li Hua

We all know that, _______, the situation will get worse.

A. not if dealt carefully with

B. if not carefully dealt with

C. if dealt not carefully with

D. not if carefully dealt with

We got up early for fear that we ______ miss the early bus.

A. could B. should C. will D. can

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