单句改错（共10小题，每题1分，共10分）

小题1:This particular sad event left a deep impression on Pliny.

小题2:With so many different forms of poetry to choose, students may eventually want to write poems of their own.

小题3:It is the forms of people who were caught in the disaster that made the city a monument of human history.

小题4:It was the first time that Helen understood such a complex word.

小题5:He yelled the young girl so that the passengers waiting in line behind him could hear.

小题6:With Helen’s knowledge and vocabulary expanded, she asked more questions.

小题7:I thought that strange that my teacher could not show me love.

小题8:The word think was also a difficult one but she had a breakthrough while worked on a simple task.

小题9:My parents are classical musicians and they named me as a famous violinist.

小题10:In other words, doctors need to achieve balance between being an authority figure and being a friendly human being.

致密性试验主要用来检查不受压或受压很低的容器管道焊缝的（）。

A.表面裂纹

B.未焊透

C.穿透性缺陷