We asked 200 students in our school about whether they wanted a younger brother or sister．Here are the results．
It shows that ________percent of them don't want to have one． This is a big problem．（ ）
A．10B．40C．50D．80
We asked 200 students in our school about whether they wanted a younger brother or sister．Here are the results．
It shows that ________percent of them don't want to have one． This is a big problem．（ ）
A．10B．40C．50D．80
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