______the bones under the sand，the scientists...

______the bones under the sand，the scientists concluded that they came from the dinosaurs about 65 million years ago．

A．Being inspected　　                             B．Inspected　　　　

C．Having inspected　                             D．To inspect

高三英语单项填空中等难度题查看答案及解析

Scientists conclude that female cats tend to favor their right paws when _______ complex tasks.

A. knocking about         B. bringing in                 C. holding up                 D. taking on

高三英语单项填空简单题查看答案及解析

Since the sex of a sea turtle(海龟)is determined by the heat of sand hatching the eggs, scientists had suspected they might see slightly more females. Climate change, after all, has driven sea temperatures higher, which, in these creatures, favors female children. They found female sea turtles from Raine Island, the Pacific Ocean's largest and most important green sea turtle living area, now outnumber males by at least 116 to 1. "This is extreme," says turtle scientist Camryn Allen.

Biologist Michael Jensen wanted to know if climate change had already changed turtles' sexes. By using genetic(基因的) tests, he'd figured out that he could follow turtles of all ages. Still, his research data would lack an important detail: sex. Only after a turtle matures is it possible to tell its sex from the outside -- mature males have slightly longer tails. By then turtles can be decades old, so scientists often use Iaparoscopy(腹腔镜检查)，sending a thin tube into each animal, but that's not so practical if you're hoping to examine hundreds of creatures. Fortunately, at a turtle conference, he met Allen, and all she needed was a little blood.

They compared their results with temperature data for nesting beaches. What worries them is that Raine Island has been producing almost female turtles for at least 20 years. This is no small thing. More than 200,000 turtles come to nest there. During high season, 18,000 turtles may settle in at once. "But what happens in 20 years when there are no more males coming up as adults? Are there enough to maintain the population?" says Allen. They also found cooler beaches in the south are still producing males, but that in the north, it's almost entirely females hatching. These findings clearly point to the fact that climate change is changing many aspects of wildlife biology.

But how widespread is this phenomenon -- and what is the consequence?

1.How might the scientists feel if there were slightly more female turtles?

A. It's normal.　　 B. It's unique.　　 C. It's extreme.　　 D. It's doubtful.

2.What is a scientist's conventional way to identify a turtle's sex?

A. Testing its blood.　　 B. Doing genetic tests.

C. Using laparoscopy.　　 D. Watching its tail.

3.Why do the findings worry Jensen and Allen?

A. Too many females gather near Raine Island.　　 B. Sea turtles may end up dying out.

C. Turtle populations are in decline.　　 D. Female turtles cause temperatures to rise.

4.What does the last paragraph imply?

A. People should stop the phenomenon.

B. People have to test the consequence.

C. Climate change has changed sea turtles' sexes.

D. More work needs doing about the phenomenon.

高三英语阅读理解困难题查看答案及解析

Bending down, he ________the footprints that hadn’t been blown away in the wind, concluding that they belonged to a wolf.

A．ignored          B．inspected        C．expanded         D．defended

高三英语单项填空简单题查看答案及解析

______into the accident, the police concluded that both of the drivers were responsible for it．

高三英语单项填空简单题查看答案及解析

After experiments on COVID-19, medical experts conclude that the chances of survival will be great, ______the infected person tests positive twice.

A.as though B.even if C.in case D.so that

高三英语单项填空简单题查看答案及解析

“It’s too early to conclude that the problem 　　　　 but I think we have been moving in the right direction,” the manager said

A. had been solved　　　 B.had solved

C. has been solved　　　 D. has solved

高三英语单项填空中等难度题查看答案及解析

The police are________to conclude that the cause of fire had been a cigarette end.

A.probable          B.possible           C.maybe              D.likely

高三英语单项填空中等难度题查看答案及解析

After pains-taking efforts, he eventually concluded that the principle he stuck _______ true.

A. to proved　　 　 　 B. to proving

C. to be proved　　　 D. to being proved

高三英语单项填空中等难度题查看答案及解析

1.It can be concluded from paragraph 1 that _______.

A.the problem of global warming will have been quite solved by 2020

B.gas emissions have been effectively reduced in developed countries

C.the Paris Agreements is more influential than the Kyoto Protocol

D.humans have made continuous efforts to slow down global warming

2.If nations could only keep the initial promises of the Paris Agreement, what would happen by the year 2100?

A.The human population would increase by one third.

B.Little over 50% of all species would still exist.

C.Nations would not need to tighten their emissions targets.

D.The Agreement’s minimum goal would not be reached.

3.If those island nations not far above sea level are to survive, the maximum temperature rise, since the start of the industrial age, should be_______.

A.0.8℃ B.1.5℃

C.2℃ D.3.5℃

高三英语阅读理解中等难度题查看答案及解析