swim ( ) the river 是填across还是through?

亲,此处考查介词
across 主要表示从某物的表面 “横过”,涉及“面”的概念.常指从这一边到另一边
1.The bus
is coming across the bridge.
2.They often go to school across the
street.
3.Can you swim across the river
而through为在立体空间中的“穿过”.物体内部穿过
如：go through the forest“穿过森林”,