“Although forecasts of presidential elections based on opinion polls measure current voter preference, many voters keep changing their minds about whom they prefer until the last few days before the balloting. Some do not even make a final decision until they enter the voting booth. Forecasts based on opinion polls are therefore little better at predicting election outcomes than a random guess would be.”
谁能帮我看看这道题有哪三个错误啊，只找出来了一个，就是many, some并没有具体数字，不能说明就是很多。
看了224感觉上面写的两点意思都差不多，希望帮忙指教，谢谢！
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