HSK 5
Yǎnjing shì fēicháng mǐngǎn de qìguān.
The eyes are very sensitive organs.
HSK 6
Xīnzàng shì réntǐ zuì zhòngyào de qìguān zhīyī.
The heart is one of the most important organs in the human body.
HSK 7-9
Qìguān juānxiàn kěyǐ wǎnjiù shēngmìng.
Organ donation can save lives.
