_____ his research paper, Professor Reagan ex...

_____ his research paper, Professor Reagan experienced various hardships and loneliness for nearly half a year．

A．Accomplishing　　　　　　 B．To accomplish

C．Accomplished　　　　　　　 D．Having accomplished

高二英语单项填空中等难度题查看答案及解析

________ to his scientific research, the professor cared little about his family.

高二英语单项填空中等难度题查看答案及解析

Professor Li has earned a world ____ with his pioneer research in biochemistry.

A. name      B. reputation    C. influence         D. feature

高二英语单项填空中等难度题查看答案及解析

________we went to visit Professor Smith, he________his research work.

A．The first time; devoted to                 B．Whenever; was concentrate on

C．For the first time; was busy with            D．Each time; was absorbed in

高二英语单项填空中等难度题查看答案及解析

—Who is the man ______ by a group of students there?

—A professor _____ research on physics.

A. followed; did         B. following; did

C. followed; doing       D. following; doing

高二英语单项填空中等难度题查看答案及解析

The professor’s research finally proved to be ______, though he had spent a lot of money on it.

A. priceless                B. valuable                 C. worthless              D. worthwhile

高二英语单项填空简单题查看答案及解析

In a paper published in the journey Science Advance, researchers describe how Matabele ants, a species of large ant known for attacking termite colonies (白蚁群落), will, after the battle, pick up injured fellow soldiers and carry them back to the nest where they can recover.

The paper is the latest in a growing body of research that this form of helping behavior, previously observed in some mammals and birds, may not require complex emotion, and may, therefore, be far more widespread in nature than previously thought.

“Here we have an example of an individual saving another individual,” says lead researcher Erik Frank who conducted the research. “We can be quite certain that the ants don’t know why they are doing what they are doing.”

It’s a behavior that pays off for the colony. Our classic conception of worker ants is that they are essentially abandoned, but Mr. Frank and his colleagues calculated that the practice of rescuing nest mates results in a colony size that is a 28.7 percent larger than it would be had the ants left their fellow soldiers for dead.

“These injured ants are able to recover from their injuries, ” says Frank. “They are essential for the safety and the betterment of the colony. ”

When a Matabele ant is injured, as often happens during battles with termites, its body will give off two smelly chemicals that tell other ants to carry it back to the nest. Indeed, the researchers found that using these chemicals to seek help from uninjured ants will effectively activate the rescue behavior, supporting their theory that the ants were acting on pure instinct(本能), not more complex emotions.

“The more we study rescue behavior in ants and other animals, the more we are going to realize that it’s not just limited to the species we’ve observed so far, ” says Karen Hollis, a professor at Mount Holyoke College, mentioning studies that found that dolphins help other injured dolphins to the surface for air, capuchin monkeys defend each other during intergroup battles, and rats free other rats that are trapped.

1.What does Frank say about Matabele ants’ helping behavior?

A. It proves they can feel sympathy.　　 B. It exists only in some individuals.

C. It happens only termite colonies.　　 D. It is something they were born with

2.How will the helping behavior benefit the ants?

A. It will expand the size of the colony.

B. It will help them catch more termites.

C. It will improve their fighting abilities.

D. It will help them escape enemies’ attacks.

3.How can Matabele ants know one needs rescuing?

A. Through its special noise.　　 B. Though the smell of its blood.

C. Through its chemical signals.　　 D. Though the search after a battle

4.What is the main purpose of the text?

A. To promote research on ants.　　 B. To describe termites’ battles.

C. To introduce a new species.　　 D. To report a research result

高二英语阅读理解中等难度题查看答案及解析

A new paper published in Environmental Research Letters has some warning news for people living in the lower 48 states: You may be at risk from river flooding and not even know it until the water starts to rise.

In fact, the study, estimates of present and future flood risk in the United States, found that 41 million U. S. residents are at risk from flooding along rivers. That’s three times more than current estimates based on the flood maps produced by the Federal Emergency Management Agency (FEMA) , which primarily maps the areas at risk for 1-in-100-year floods in populous (人口众多的) river basins.

Why does the big difference come into being? As always, it’s all about the data. Generally, FEMA prioritizes risk-assessment areas based on their population; reserving expensive field-work methodologies (研究方法) for the more populous river basins, but many other rivers have not yet been mapped at all.

The size of the USA means that flood maps made in this way are incomplete. It would be too expensive and time-consuming to survey every river basin in America. The national-scale flood maps produced by FEMA leave the flood risk of many parts of the country unaccounted for.

For this research, scientists from The Nature Conservancy adopted a pioneering methodology that avoids the defects of the FEMA approach, where individual catchments (流域) are studied by making use of big data. The study used a new high-resolution model, produced by the flood-mapping organization Fathom, which copies floods on all rivers across the entire continental United States.

“We were all surprised by how many people are actually exposed to freshwater flooding in the USA,” said Oliver Wing, lead researcher on the study and a PhD student at the University of Bristol. “It’s particularly worrisome considering that most of these people aren’t even aware of the risk they face. This study helps fill that critical information gap.”

1.What did the new paper intend to tell readers?

A.The mistakes made by FEMA.

B.The serious situation of the flood.

C.The populous river basins of the USA.

D.The unseen risk of the flood in the USA.

2.Why is the map produced by FEMA incomplete?

A.It’s dangerous to research all the rivers.

B.The size of the USA is too big.

C.It ignores less populous rivers.

D.The efficiency of making it is low.

3.What does the underlined word “defects” in paragraph 5 mean?

A.Shortcomings. B.Potential.

C.Consumption. D.Contributions.

4.What attitude does Oliver Wing have to the study?

A.Critical. B.Supportive.

C.Cautious. D.Uncaring.

高二英语阅读理解中等难度题查看答案及解析

What is the woman doing now?

A.Doing some research. B.Writing a paper. C.Preparing for a test.

高二英语短对话简单题查看答案及解析

What is the woman doing now?

A. Doing some research.　　 B. Writing a paper.　　 C. Studying for a test.

高二英语短对话中等难度题查看答案及解析