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【单选题】Losing Weight Girls as young as 10 years old are dieting and in danger of developing unhealthy attitudes to weight, body image and food, a group of Toronto researchers reported Tuesday. Their study of...
A.
had unhealthy attitudes to weight.
B.
were overweight.
C.
were on a diet.
D.
had healthy weights.
【单选题】药材附子的来源是（）
A.
毛茛科植物乌头子根的加工品
B.
毛茛科植物北乌头侧根的加工品
C.
毛茛科植物乌头的子根
D.
毛茛科植物川乌的子根
E.
毛茛科植物草乌的主根