问题 单项选择题

正月には 国へ 帰る————に しました。

A.こと

B. もの 

C. はず

D.の

答案

参考答案:A

单项选择题

遗传性疾病是因体内某种基因缺乏或突变所引起的。①能对其中病态基因,进行补偿,替代或修复,能在治疗遗传性疾病方面取得很大的进展。因此,现代医学诞生了一个新科目。目前可行的是将患者细胞所需要的基因与适当的载体重组,转移于受体细胞 (靶细胞)内,转移基因既有表达功能的外源性基因在受体细胞内表达并产生前所未有的基因产物,②达到治疗遗传性疾病的目的。它③为基因替代与修复奠定了基础。将生殖细胞(受精卵)作为靶细胞的基因治疗有根治效果,可在当代及患者生殖的后代中免除遗传性疾病,但目前不能应用于人类,④它能抑制某些基因遗传,一旦失控,哪怕只有一例,也为传统的人伦观念所不允许。将无遗传观念的体细胞作为靶细胞则是可行的,但疗效报告中不会贸然出现“根治”的字样。更重要的是选择目的基因,它是补偿缺欠基因的外源正常基因,通常取自正常供体细胞基因组DNA或人工合成DNA的片段,供转移的目的基因必须结构完整,转移后能随细胞分裂而复制或分裂。两个选择是治疗遗传疾病的第一步。

准确概括目前治疗遗传性疾病的新做法及其目的是()。

A.用正常基因修复病体基因,以改善变异基因的功能

B.用正常基因替代变异基因,以改善遗传基因的功能

C.将有表达功能的外源性基因转移到靶细胞内,以替代缺损基因的功能

D.将外源性基因的表达功能转移到靶细胞内,以替代缺损基因的功能

阅读理解

阅读理解。

     Honesty, my mum always used to tell me, is the best policy. Of course, this didn't include her when

she told me that if I didn't eat all my vegetables Father Christmas would find out and wouldn't give me

any presents.

     But when it comes to medicine, I had assumed it was important to always be honest with my patients. After all, the doctor-patient relationship is based on trust, and therefore honesty is essential, or so I

thought.

     I had just started working in geriatrics (老年病科). Mr. McMahon was brought in when his baby was

found very swollen. I took a medical history from his daughter who had accompanied him in the

ambulance. She'd been his main carer for years. I stood looking at him as she gave a detailed history.

"Has he lost any weight recently?" I asked, "Well, it's funny you should mention that, but yes. "She said

slowly. There was silence for a few moments." Why? What are you worried about?" she asked, I

hesitated. She was obviously very involved in his care and it was only fair that I told her the truth. "Well,

we need to prove it's not cancer. " I said and talked briefly about some of the tests I was going to order.

     Half an hour later, a nurse called me: "Mr. McMahon's daughter broke down-she said you told her

he had cancer. " My heart sank. By the time I arrived at the ward, my consultant was already there,

explaining that we still had to run lots of tests and that it was by no means confirmed that he had cancer.

I stood silently at the end of the bed. My consultant was obviously angry with me and as we left Mr.

McMahon, she turned to me. "Why on earth did you do that?" she asked in disbelief. I looked at her and

bit my lip. "She asked me what I was worried about and I told her. " I said, hanging my head. "And give

her more to worry about?" replied my consultant. "You don't say the word 'cancer' until it's confirmed.

Even if you suspect it, think very carefully before you tell people. "

     As it turned out, it wasn't cancer. But I did learn that when someone is stressed and worried about

their loved one they're sometimes selective in what they hear-and as a doctor it's important to be

mindful of this. In being truthful, I'd made the situation worse.

1. The purpose of the first two paragraphs is to show that the author_________. 

A. misunderstood the doctor-patient relationship

B. was anxious to receive Christmas gifts

C. regarded honesty as the best policy

D. had an unhealthy eating habit 

2. The author's consultant was angry with him because _________.

A. he told the daughter what he suspected.

B. he delayed running the necessary tests.

C. he failed to confirm the parent's disease.

D. he forgot what the consultant had advised.

3. The author hung his head (the underlined part in Para. 4) because he was feeling_________. 

A. guilty

B. hurt

C. disappointed

D. helpless

4.What lesson has the author learnt from his experience?

A. Learning from parents is necessary.

B. Jumping to a conclusion is dangerous.

C. Telling the truth may not always be the best solution.

D. Selecting pleasant words may not be the perfect policy.