阅读下面短文，按照句子结构的语法性和上下文连贯的要求，在空格处填入一个适当的词或使用括号中词语的正确形式填空，并将答案填写在答卷标号为1-10的相应位置上。

We are all in the position of the farmer. If we plant a good seed, we __小题1:__（get） a good harvest. If our seed is poor and full of weeds, we’ll get a __小题2:__ (use) crop. If we don’t plant anything, we’ll harvest nothing at all. I want the future to be better __小题3:__ the past. I don't want it __小题4:__ (pollute) by the mistakes and errors _小题5:__ which history is filled. We should all __小题6:__ (concern) about the future because that is __小题7:__ we will spend the rest of our lives. The past is gone and static. Nothing we can do will change it. The future is __小题8:_ us and it is dynamic. Everything we do will affect it. Each day it will bring us new frontiers in our homes and in our businesses as long as we recognize __小题9:__. We are just at __小题10:_ beginning of the progress in every field of human efforts.

工程建设中通用的有关安全、卫生和环境保护的标准属于( )。

A．国际标准

B．行业标准

C．强制性标准

D．推荐性标准