问题 多项选择题

老年心力衰竭发病前心脏常存在的增龄性变化有()

A.心脏间质纤维组织增生

B.主动脉下室间隔肥厚

C.心肌细胞数量减少,单个心肌细胞体积下降

D.窦房结和房室结细胞数量减少

E.最大心率和射血分数不变

答案

参考答案:A, B, D

选择题
单项选择题

He was struggling to tie his shoes. I was struggling with whether I should help him.
I did, and he was grateful.
"Thank you," he said.
"I’m glad I could help. I just thought it would be easier for me to reach," I said.
He was a disabled man, and forced to look down most of the time. His arms and legs were twisted terribly, and he couldn’t do what the rest of us would consider easy tasks. He always managed to Look up to see how you reacted to his words, however. He had a big smile, making me feel comfort- able.
I was still on my knees by his wheelchair.
"Nice shoes," he said.
"Thanks. No one ever complimented me on them before," I said.
"No one has the same view of the world as I do," he replied.
"Tell me about the world as you see it," I said smiling.
"Most people can see if someone is comfortable with them or not in their eyes. I see it in their feet," he said. "If people keep moving their feet, I just let them go, because I know they’re impatient with me. I don’t want to make people uncomfortable."
"What about me" I asked.
"I could see your compassion. And then you came down to my level. I was the one who was nervous," he said. "I don’t normally have someone look me in the eye. "
"They don’t know what they’re missing," I told him.
"My old face is nothing to brag about. " he said.
"But that smile is so big. "
Yes, and it’s not only a big smile but an attitude.

The writer felt comfortable because ______.

A.he had a nice talk to the man

B.the man looked him in the eye

C.he didn’t move his feet before the man

D.the man had a big smile on the face