To prevent a repetition of this dreadful occurrence, we must discover the ______ element i

The main purpose of the passage is to______.A．offer advice on how to prevent hip fractures

______ is used to prevent the entry of sea water to the machinery space.A.A special sealin

What is the effective way to prevent the burnout of young athletes？A．To reduce their menta

To prevent dental disease, we should take a range of______of Vitamin C per day.A．25-2,000

The bank has designed a system to prevent the（) of credit cards.A、useB、loanC、misuseD、pr

______ refers to the repetition of the same sounds at the beginning of words.A．Alliteratio