The explorer got a disease in blood for _____...

The explorer got a disease in blood for ________of fresh vegetables and fruit.

A. sake　　 B. lack

C. ignorance　　 D. knock

高二英语单项填空中等难度题查看答案及解析

Eating too much fat can _______ heart disease and cause high blood pressure.

Which of the following is not correct?

A. lead to　　　　　　 B. result from

C. contribute to　　 D. bring about

高二英语单项填空中等难度题查看答案及解析

AIDS may be one of the most undesirable diseases in the world. Luckily, there is now hope for AIDS patients.

According to a recent paper published in the New England Journal of Medicine, Chinese scientists have successfully used CRISPR technology - a method of gene editing - to treat a patient with HIV. While it may not have cured the patient fully, it still represents a huge step forward in fighting the disease.

The patient was a 27-year-old Chinese man who was diagnosed with both AIDS and acute lymphoblastic leukemia (急性淋巴细胞白血病), a type of blood cancer. Despite his hopeless situation, doctors offered him a glimmer of hope: a bone marrow (骨髓) transplant to treat his cancer and an experimental treatment for his HIV.

They used this opportunity to edit the DNA in bone marrow stem cells from a donor before transplanting the cells into the patient.

Specifically, the treatment involved using the gene-editing tool CRISPR-Cas9 to delete a gene known as CCR5, which encodes a protein that HIV uses to get inside human cells. Without the gene, HIV is unable to infiltrate cells.

Talking about the gene, lead scientist Deng Hongkui told CNN, “After being edited, the cells - and the blood cells they produce - have the ability to resist HIV infection.”

Nineteen months after the treatment, the patient’s leukemia was in complete remission (缓解) and donor cells without CCR5 remained, according to the research paper.

Though the transplant did not cure the man’s HIV, it still showed the effectiveness of gene-editing technology, as there was no indication of any unintended genetic alterations - a major concern with past gene therapy experiments.

Amesh Adalja, a senior scholar at the Johns Hopkins Centre for Health Security in the United States, who was not involved in the study, praised the treatment.

“They did a very innovative experiment. It was safe,” he told Live Science. “It should be viewed as a success.”

Deng believes gene-editing technology could “bring a new dawn” to blood-related diseases such as AIDS and sickle cell anemia (镰刀形细胞性贫血).

“Thanks to this new technology, the goal of a functional cure for AIDS is getting closer and closer,” he said.

1.The technology of CRISPR is to ___________.

A.transplant cells B.encode genes

C.remove proteins D.produce cells

2.What was the result of the treatment?

A.CCR5 and other genes in the patient’s cells were changed.

B.The number of cells infected by HIV decreased.

C.Some of the patient’s blood cells could resist HIV infection.

D.HIV no longer existed in the patient’s cells.

3.What do we know about the experiment?

A.It provided an innovative way to cure AIDS patients.

B.It pointed out the problems of gene therapy.

C.It could offer a safe treatment for blood-related diseases.

D.It’s the first experiment to use gene-editing technology to treat AIDS.

高二英语阅读理解中等难度题查看答案及解析

He got to the station early, ____ missing his train.

A. in case of         B. instead of                  C. for fear of                D. in search of

高二英语单项填空简单题查看答案及解析

Eating too much fat can contribute _________ heart disease and cause high blood pressure.

A. for　　 B. in

C. to　　 D. on

高二英语单项填空简单题查看答案及解析

After John stayed in Shanghai for a couple of days, he got the impression______ the city was very fascinating.

高二英语单项填空困难题查看答案及解析

To Whom It May Concern:

My husband and I got married in 1965 and for the first ten years of our marriage I was very happy to stay home and raise our three children. Then four years ago, our youngest child went to school and I thought I might go back to work.

My husband was very supportive and helped me to make my decision. He emphasized all of the things I can do around the house, and said he thought I could be a great success in business.

After several weeks of job-hunting I found my present job, which is working for a small public relations firm. At first, my husband was very proud of me and would tell his friends , "My clever little wife can run that company she's working for."

But as his joking remark approached reality, my husband stopped talking to me about my job．I have received several promotions and pay increases , and I am now making more money than he is. I can buy my own clothes and a new car. Because of our combined incomes, my husband and I can do many things that we had always dreamed of doing , but we don't do these things because he is very unhappy.

We fight about little things and my husband is very critical of me in front of our friends. For the first time in our marriage, I think there is a possibility that our marriage may come to an end．

I love my husband very much, and I don't want him to feel inferior, but I also love my job．I think I can be a good wife and a working woman, but I don't know how .Can you give me some advice? Will I have to choose one or the other or can I keep both my husband and my new career?

Please help.

"Distressed"

1.The letter was most probable written ________.

A．in 1975            B．around 1980                                 C．four years ago D．in 1965

2.Her husband ________ when she first found her present job．

A．was very critical of her                  B．felt disappointed

C．was proud of her                             D．was happy but critical

3.What does the underlined word "promotion" mean?

A．scolding           B．criticism         C．prize                 D．advancement

4.As her income increased, ________.

A．she found a gap emerged between her and her husband

B．she bought more clothes and a house

C．she did the many things she and her husband dreamed of

D．she felt very proud of herself

高二英语阅读理解中等难度题查看答案及解析

To Whom It May Concern:

My husband and I got married in 1965 and for the first ten years of our marriage I was very happy to stay home and raise our three children. Then four years ago, our youngest child went to school and I thought I might go back to work.

My husband was very supportive and helped me to make my decision. He emphasized all of the things I can do around the house, and said he thought I could be a great success in business.

After several weeks of job-hunting I found my present job, which is working for a small public relations firm. At first, my husband was very proud of me and would tell his friends , "My clever little wife can run that company she's working for."

But as his joking remark approached reality, my husband stopped talking to me about my job．I have received several promotions and pay increases , and I am now making more money than he is. I can buy my own clothes and a new car. Because of our combined incomes, my husband and I can do many things that we had always dreamed of doing , but we don't do these things because he is very unhappy.

We fight about little things and my husband is very critical of me in front of our friends. For the first time in our marriage, I think there is a possibility that our marriage may come to an end．

I love my husband very much, and I don't want him to feel inferior, but I also love my job．I think I can be a good wife and a working woman, but I don't know how .Can you give me some advice? Will I have to choose one or the other or can I keep both my husband and my new career?

Please help.

"Distressed"

1.The letter was most probable written ________.

2.Her husband ________ when she first found her present job．

3.What does the underlined word "promotion" mean?

4.As her income increased, ________.

高二英语阅读理解简单题查看答案及解析

My husband and I got married in 1965 and for the first ten years of our marriage I was very happy to ______ home and raise our three children.Then four years ago，our youngest ______ went to school and I thought I might go back to ______.

My husband was very ______and helped me to make my decision.He pointed out all of the things I can do around the ______，and said he thought I could be a great ______ in business.After several weeks of job­hunting，I found my ______job，which is working for a small public relations firm.At first，my husband was very ______ of me and would tell his friends，“My clever little wife can ______ that company she’s working for.”

But as his joking words were close to ______，my husband stopped talking to me about my job.I have received several promotions and pay increases，and I am now ______ more money than he is.I can buy my ______ clothes and a new car.Because of our joint incomes，my husband and I can do many things that we had always ______ of doing，but we don’t do these things because he is very ______.

We ______ about little things and my husband is very critical of me in front of our friends.For the first time in our marriage，I think there is a possibility that our marriage may come to a(n) ______.

I love my husband very much，and I don’t want him to ______ lower，but I also love my job.I think I can be a good wife and a working woman，but I don’t know ______.Can you give me some ______？Will I have to choose one or the other or can I keep both my ______ and my new career?

1.A. look　　 B. stay　　 C. see　　 D. study

2.A. person　　 B. man　　 C. child　　 D. lady

3.A. school　　 B. factory　　 C. study　　 D. work

4.A. restricted　　 B. opposite　　 C. disappointed　　 D. supportive

5.A. group　　 B. house　　 C. firm　　 D. husband

6.A. success　　 B. failure　　 C. mother　　 D. helper

7.A. awkward　　 B. convenient　　 C. useful　　 D. present

8.A. warm　　 B. fond　　 C. proud　　 D. comfortable

9.A. run　　 B. walk　　 C. hire　　 D. sell

10.A. awareness　　 B. beliefs　　 C. reality　　 D. ambition

11.A. making　　 B. building　　 C. producing　　 D. growing

12.A. cheap　　 B. own　　 C. important　　 D. incredible

13.A. agreed　　 B. believed　　 C. dreamed　　 D. supposed

14.A. unhappy　　 B. confident　　 C. discouraging　　 D. certain

15.A. communicate　　 B. strike　　 C. fight　　 D. change

16.A. absence　　 B. end　　 C. exam　　 D. question

17.A. gain　　 B. add　　 C. feel　　 D. suffer

18.A. what　　 B. where　　 C. why　　 D. how

19.A. duties　　 B. advice　　 C. fun　　 D. enjoyment

20.A. husband　　 B. child　　 C. friendship　　 D. boss

高二英语完形填空简单题查看答案及解析

Though the girl had been suffering from the blood disease, she acted as if nothing____ to her while facing her friends and relation.

A．happened         B．would happen      C．was happened      D．had happened

高二英语单项填空中等难度题查看答案及解析