<文意選填>第21至30題為題組 When a person sweats， he loses water and salt， so he needs to replace both. Replacing lost fluid with just plain water means the body has too much water and not enough salt. To ______ things out， the body will get rid of water by producing urine. (A) absorption (B) active (C) alert (D) combat (E) option (F) effective (G) even (H) status (I) pass through (J) reach for
