【已刪除】The body is composed of some hundred thousand million cells, ____ is complete in itself. (A) which (B) some of which (C) each of which (D) of which

【已刪除】Xanthines have both good and bad effects on the body, and these effects ____ the size and regularity of dosage. (A) generally determine on (B) which are generally determined by (C) generally determined by (D) are generally determined by