简答题The teacher should praise students for their correct answers and also suggest ________ possibilities.A) unlimitedB) uniqueC) alternative D) essential简答题Such chemicals are indeed negatively ________ those humans to whom they are exposed.A) riskingB) detectingC) impacting D) overwhelming简答题Science can now ________ many things which were thought to be mysterious by ancient people.A) care forB) lay outC) account for D) set up简答题In some classrooms, desks are arranged in a U-shape, so the teacher can ________ easily with the students.A) interruptB) interact C) interpretD) interview简答题The fall in the number of deaths from heart disease is generally ________ improvements in diet.A) put up withB) attributed to C) added toD) replaced with