What happens when the large pieces of ice block the river?(4分)
AIce begins to melt.
BThey may cause the water to rise.
CThey may hold the water.
DThey may float down the river.
出自:山东理工大学英语2

完成拼图验证

按住下方滑块,将拼图拖到缺口处后松开。

拼图背景,将小拼图拖到缺口处
向右拖动滑块