SummarizationRead each of the following short paragraphs and complete the phrase or sentence that expresses the main idea of the paragraph. The first letter of the missing word is given before the blank.Paragraph 5.Today, a variety of safety tests is conducted on a wide range of chemicals and products, including drugs, vaccines, cosmetics, household cleaners, pesticides, industrial chemicals, foodstuffs, and packing materials.The most thorough testing is reserved for drugs and products that will be used in or on foodstuffs.5. The t______of safety testing.
【正确答案】：types
【题目解析】：P195
