It is in their ability to speak ______ humans...

It is in their ability to speak ______ humans ______ from animals.

A. which; differ     B. that; different      C. which; different       D. that; differ

高二英语单项填空中等难度题查看答案及解析

It is in their ability to speak ______ humans ______ from animals.

高二英语单项填空中等难度题查看答案及解析

Mosquitoes have an extraordinary ability to target humans far away and fly straight to their unprotected skin. Regrettably, mosquitoes can do more than cause an itchy(发痒的)wound. Some mosquitoes spread several serious diseases, including Dengue, yellow fever and malaria.

Over one million people worldwide die from these diseases each year. New research now shows how mosquitoes choose who to bite.

Mosquitoes need blood to survive. They are attracted to human skin and breath. They smell the carbon dioxide gas, which all mammals breathe out. This gas is the main way for mosquitoes to know that a warm-blooded creature is nearby.

But mosquitoes also use their eyes and sense of touch. Michael Dickinson is a professor at the California Institute of Technology. His research shows how these small insects, with even smaller brains, use three senses to find a blood meal.

Michael Dickinson’s team used plumes—a material that rises into the air of carbon dioxide gas into a wind tunnel. They then used cameras to record the mosquitoes. The insects followed the plume.

Then, the scientists placed dark objects on the lighter colored floor and walls of the tunnel. Mr Dickinson said, at first, the mosquitoes showed no interest in the objects at all.

“What was quite striking and quite surprising is that the mosquitoes fly back and forth for hours. These are hungry females and they completely ignore the objects on the floor and wall of the tunnel. But the moment they get a hit of CO2, they change their behavior quite obviously and now would become attracted to these little visual blobs (斑点).”

This suggested to the researchers that a mosquito’s sense of smell is more important in the search for food. Once mosquitoes catch a smell of a human or animal, they also follow visual signals.

1.What do mosquitoes mainly use to find their targets?

A. Sense of smell. B. Sense of touch.

C. Sense of sight. D. Smart brains.

2.The first response of the mosquitoes to the objects in the experiment is 　　 .

A. to fly to the dark ones

B. to catch and stick to them

C. to take no notice of them

D. to attach themselves to them

3.How can we avoid being attacked by mosquitoes according to the text ?

A. Don’t let them see us.

B. Use dark objects to stop them.

C. Make them fly back and forth for hours.

D. Attract them to objects full of carbon dioxide gas.

4.What can be the best title for the text?

A. How Do Mosquitoes Survive?

B. Why Do Mosquitoes Need Blood?

C. How Do Mosquitoes Choose to Bite You?

D. Why Do Mosquitoes Attack the Human Being?

高二英语阅读理解简单题查看答案及解析

Teachers should allow their students to study ________ from the start, and it is bound to result in their ability to deal with problems on their own.

A. theoretically　 B. socially　　　　　 C. optionally　　　　 D. autonomously

高二英语单项填空简单题查看答案及解析

It is often ____ that human beings are naturally equipped to speak.

A. said         B. to say           C. saying          D. being said

高二英语单项填空困难题查看答案及解析

(CNN) — An ultra-marathoner trying to “run” from Florida to Bermuda in a human-powered inflatable (充气的) bubble was rescued Saturday morning, after he signaled for help, the Coast Guard said.

Reza Baluchi, according to his website, has set a goal of running across more than 190 recognized nations to encourage world peace.

The Coast Guard first came across Baluchi on Wednesday after receiving a report about a man in a bubble off the coast of Miami, disoriented and asking for directions to Bermuda, a Coast Guard press release said. It was not clear when he started his adventure.

A Coast Guard ship found Baluchi. Officials described the craft as a “hydro pod bubble” and a man in a 2013 YouTube video called a Baluchi bubble “a big hamster wheel.” It moved along the ground as Baluchi ran inside.

In the press release, the Coast Guard said Baluchi had protein bars, bottled water, a GPS and a satellite phone. The Coast Guard warned him of the voyage’s dangers and asked Baluchi to quit his journey because he didn’t have enough supplies. But he wouldn’t leave his bubble, officials said.

The Coast Guard monitored his progress and on Saturday morning exhausted Baluchi activated(激活) his personal locating beacon(灯塔), the Coast Guard said.

A Coast Guard airplane and a helicopter, along with the boat Maersk Montana, were sent to rescue Baluchi 70 miles east of St. Augustine, the Coast Guard said.

He was exhausted and taken to the Coast Guard air station, where his medical condition was evaluated. There were no reported injuries, the Coast Guard said.

“Part of his effort was to make world peace but he got caught up in the Gulf Stream,” said Coast Guard public affairs specialist Mark Barney. “The chances of muscling out of the Gulf Stream were pretty low.”

Baluchi could not be reached for comment, but a video posted on Baluchi’s Facebook page described his plans to travel in the bubble across the Caribbean, as well as his other athletic exploits.

The CNN.com story quoted Baluchi saying he’d run across the United States twice and around its border once. He said he fled Iran to escape persecution (迫害). Now he is an American citizen.

1.What happened to Baluchi when he first came across the Coast Guard?

A. He was confused about which direction he should go.

B. His bubble was broken.

C. He was exhausted by the adventure.

D. He activated his locating beacon.

2.From the passage, we can know that __________.

A. The Coast Guard advised Baluchi to quit the journey because the weather was terrible.

B. Baluchi ended his journey since he hadn’t enough supplies.

C. In the press release, Baluchi described his plan to cross the Caribbean in the bubble.

D. Although Baluchi was exhausted, there were no reported injuries after his being rescued.

3.Which of the following words can best describe Reza Baluchi’s personality?

A. Optimistic　　　 B. Adventurous

C. Hardworking　　 D. Careless

高二英语阅读理解中等难度题查看答案及解析

It is the ability to do the job _____ matters, not where you came from or what you are.

A.one           B.it            C. what         D. that

高二英语单项填空简单题查看答案及解析

____ is the ability to do the job rather than where you come from or what you are that matters.

A. It                    B. That                        C. This                         D. There

高二英语单项填空简单题查看答案及解析

It is the ability to do the job___matters not where you come from or what you are.

A．this              B．that              C．what             D．it

高二英语单项填空中等难度题查看答案及解析

It is not where you come from or what you are, but the ability to do the job________matters.

高二英语单项填空中等难度题查看答案及解析