【C3】A．questionB．answersC．standardsD．rules

A．questionsB．answersC．solutionsD．problems

The word "they" （Line Para.3) denotes ______.A．damagesB．answersC．decisionsD．questions

A．questionB．problemC．argumentD．process

【C8】A．levelsB．experimentsC．standardsD．opinions

【C4】A．Out of questionB．ThoughC．ProbablyD．Undoubted

【C3】A．a questionB．a reasonC．an opinionD．an idea