课时规范训练(二十)
Ⅰ.完形填空
(2017·四川成都一诊)One day, a professor entered the classroom and asked his students to prepare for a surprise test. They waited anxiously at their desks for the test to begin. The professor __1__ the question papers, with the text facing down as usual.__2__ he handed them all out, he asked his students to __3__ the page and begin. To everyone's surprise, there were no __4__， just a black dot in the center of the page. The professor, seeing the expression on everyone's face, told them the following：
“I want you to write what you __5__ there.”
The students，__6__， got started on the inexplicable (费解的) task.
At the end of the class, the professor __7__ all the answer papers and started reading each one of them aloud in front of all the students. All of them, with no __8__， described the black dot，
