We can’t figure out ______ quite a number of insects and birds are dying out．
A． that B． as C． why D．when
高三英语单项填空中等难度题
We can’t figure out ______ quite a number of insects and birds are dying out．
A． that B． as C． why D．when
高三英语单项填空中等难度题查看答案及解析
We can’t figure out ______ quite a number of insects and birds are dying out．
A．that B．as C．why D．when
高三英语单项填空中等难度题查看答案及解析
—Have you heard that George quit his job?
—Yeah, but I can't________why he did so.
A．put out B．figure out
C．carry out D．send out
高三英语单项填空中等难度题查看答案及解析
The number of historic buildings which ________ has reached a surprising figure that we must be aware of.
A．has been pulled down B．had been pulled down
C．is being pulled down D．have been pulled down
高三英语单项填空中等难度题查看答案及解析
“We can’t go out in such weather．” said the father, _____ out of the window, and left his daughter disappointed．
A．looking B．looked C．to look D．having looked
高三英语单项填空中等难度题查看答案及解析
Spend the least time on those things that are completely_______, and figure out what you can do practically to make a difference．
A．out of shape B．out of control
C．out of practice D．out of touch
高三英语单项填空中等难度题查看答案及解析
One businessman was in debt and couldn’t figure out a way out of it when an old man appeared before him.
“Is something bothering you?” he said. After listening to the ___businessman, the old man said: “ I think I can help you.” He wrote him a ___, saying: “Take this money. We will meet here ___in one year, and you will be able to ___it to me at that time.” Then, he turned around and disappeared just as____as he appeared.
The businessman saw the check in his hands for an amount of 500 thousand dollars, ___by John Rockefeller, one of the ___people in the world at that time! But instead of using the money, he put the check into his safe. The thought about its ___gave him strength to find a solution to save his business.
___the return of his courage, he concluded profitable deals. Months ___and he got out of ___and started to earn money again. Exactly one year ___, he returned to the park with the same check. At the ___time the old man appeared again. But ___the businessman wanted to return the check and share his story of ____, a nurse ran up and grabbed the old man.
“I’m so glad, I caught him!” She exclaimed. “I hope he wasn’t ____ you. He always runs away from the house and ___he is John Rockefeller.”
The businessman was puzzled, and suddenly he understood that it’s not the money, ___or imaginary, that turned his life up. It was his new ___and belief that gave him strength to ____ everything that he had now.
1.A. mad B. discouraged C. interesting D. brave
2.A. check B. hand C. lift D. look
3.A. possibly B. exactly C. especially D. generally
4.A. give B. pay C. thank D. return
5.A. suddenly B. strangely C. happily D. firmly
6.A. made B. given C. signed D. paid
7.A. kindest B. richest C. best D. poorest
8.A. number B. value C. usage D. existence
9.A. For B. As C. Despite D. With
10.A. came B. ended C. passed D. went
11.A. danger B. sadness C. trouble D. debt
12.A. ago B. later C. away D. before
13.A. same B. agreed C. counted D. regulated
14.A. when B. before C. after D. if
15.A. happiness B. failure C. success D. sorrow
16.A. scolding B. criticizing C. frightening D. bothering
17.A. tells B. thinks C. praises D. imagines
18.A. false B. real C. wrong D. true
19.A. gains B. bravery C. plan D. confidence
20.A. do B. face C. achieve D. like
高三英语完形填空简单题查看答案及解析
Less than 5 percent of elephants die from cancer, and researchers may have finally figured out why.
According to a study from The University of Chicago, elephants produce "zombie genes" (僵尸基因)that can help protect the animal from cancer.
Here's how it works: Humans and other animals carry one copy of a " master tumor suppressor" Gene(主肿瘤抑制基因). Elephants have 20 copies. Scientists found that gene can cause a "zombie gene" to come back to life with a new purpose: killing cells in damaged DNA.
This is beneficial. because it acts in response to genetic mistakes, errors made when the DNA is being repaired, said Vincent Lynch, an assistant professor of human genetics at the University of Chicago and the study's lead author, in a statement. " Getting rid of that cell can prevent a subsequent cancer. "
Scientists say the gene also helps elephants enjoy long lives. They likely emerged roughly 25 to 30 million years ago, when small - sized ancestors of modern elephants grew bigger, Lynch said.
Researchers want to conduct more studies to find out exactly how the genes in elephants kill off cells in damaged DNA. That could help humans: Studying how animals' bodies fight off cancer could lead to strategies to treat people. An estimated 17% of people worldwide die of cancer, according to the study published in the journal Cell Reports.
"If we can understand how these genomic changes (基因组变化 ) are contributing to cancer resistance, then we'll be able to start thinking about how we translate these to our patients. "Joshua Schiffman professor of pediatrics at University of Utah and an investigator at Huntsman Cancer Institute, said in an interview with CNN.
1.Why do elephants have a lower risk of dying from cancer than humans?
A. They have less "zombie genes".
B. They eat less meat and more grass.
C. They are huge enough to kill cells in damaged DNA.
D. They have more copies of a "master tumor suppressor" gene.
2.The "master tumor suppressor" gene brings the following benefits except that .
A. it can prolong elephants' lives B. it can be transplanted into humans
C. it can kill cells, in damaged DNA D. it can bring "zombie genes" back to life
3.What does the underlined word "these" in the last paragraph refer to?
A. genomic changes B. cancer resistance
C. animals bodies D. cells in damaged DNA
4.What is still a "puzzle" for researchers?
A. How many people die of cancer.
B. What kind of gene can kill the cancer
C. Why we adopt the strategies to treat people.
D. How the genes defeat the cells in damaged DNA.
高三英语阅读理解困难题查看答案及解析
A lot of teams wanted me to ____ for other positions and I told them no.
A．try out B．figure out C．let out D．break out
高三英语单项填空中等难度题查看答案及解析
More and more students are this modern type of instruction.
| A．resulting from | B．figuring out | C．benefiting from | D．bringing up |
高三英语单项填空简单题查看答案及解析