预防慢性风湿性心脏瓣膜病患者风湿活动复发的根本措施是A．积极_爱下问搜题

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问题单项选择题

预防慢性风湿性心脏瓣膜病患者风湿活动复发的根本措施是

A．积极锻炼身体

B．需较长时间卧床休息

C．积极预防与治疗链球菌感染

D．积极治疗心功能不全

E．积极补充营养

答案

参考答案：C

解析：预防慢性风湿性心脏瓣膜病患者风湿活动复发的根本措施是积极预防与治疗链球菌感染，因为它是引起此病的主要原因，其他属于预防的非主要因素。 [考点] 慢性风湿性心脏瓣膜病。

完形填空

One day, a boy found the cocoon(茧) of a butterfly and brought it home. A few days later, the boy saw a small ___31___ in the cocoon. He sat and watched for several hours as a butterfly struggled to make ___32___ body through that little hole. Suddenly it stopped.
So the boy ___33___ to help the butterfly, thinking the butterfly might be___34___ .He took a pair of scissors(剪刀) and cut the hole ___35___ .The butterfly came out of the cocoon but it ___36___ a little different. It had a weak body and small, thin ___37___ .The butterfly didn’t start to fly. In fact, the butterfly spent the rest of its life crawling(爬行) around with a weak body and thin wings. It was never able to fly.
The boy acted with___38___ but he didn’t understand why it could be like this. When a butterfly crawls out of the cocoon, it must struggle. The hard work of ___39___ out of the cocoon makes the fluid(液体) from the butterfly’s body into its wings. It helps the butterfly be___40___ to fly. If the butterfly never has to squeeze(挤压) itself out of the cocoon, its wings will never get the fluid and it can never fly.___41___ struggles are what we need in our lives. If we lived our lives without any problems, we would never learn or grow. We would not be ___42___ as we could have been and we would never fly.
In our lives, pain and suffering is the key to all windows, and sometimes even ___43___ growth, without it , there’s no way of life. We can’t avoid ___44___ or problems. So, next time you are ___45___ a problem or difficulty, remember the butterfly. Struggle a little----then fly!

D．as creative

B．difficulties

A．served with

B．growing into

C．bringing in

问答题简答题

在模板拆除及卸架的过程中，当砼强度达到什么标准时可以拆除非承重模板？当砼强度达到什么标准时，可以拆除承重模板？