在下列四种不同的实验条件下,测定光照强度对光合作用速率的影响:①0.10% CO2,

题型:单项选择题

问题:

在下列四种不同的实验条件下,测定光照强度对光合作用速率的影响:①0.10% CO2,30℃;②0.10% CO2,20℃;③0.03% CO2,30℃;④0.03% CO2,20℃。如右图曲线分别表示了①~④实验的结果,下列对于限制光合作用速率的主要因素,判断正确的一组是()

A.选项A

B.选项B

C.选项C

D.选项D

考点:高中生物光合作用光合作用题库
题型:单项选择题

下列哪项不是免疫抑制剂治疗肾病综合征的适应证()

A.频繁复发

B.激素依赖

C.激素耐药

D.激素治疗中出现严重副作用

E.肾炎性肾病

题型:单项选择题

单向琼脂扩散法测定免疫球蛋白每次测定时

A.必须同时制作标准曲线

B.可采用不同批号抗血清制作的标准曲线

C.以沉淀环大小报告结果即可

D.以上均可

E.血清需要灭活

题型:单项选择题

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.

题型:单项选择题

发行金融债券所筹集的资金一般用于某种特殊用途或改变本身的资产负债结构。( )

题型:单项选择题

皆が並んでいるのに、後から来て割り込むとは何て()人なのだろう。

A.なれなれしい

B.わずらわしい

C.はなはだしい

D.ずうずうしい

更多题库