从所给的四个选项中，选择最合适的一个填入问号处，使之呈现一定的规律性（）
A.选项A
B.选项B
C.选项C
D.选项D
参考答案：C
Choose and write. (把下面的单词分类)
Word List
swim taller toothache cold skating danced play football
fever younger sang stronger ate funnier headache saw skiing
1.Comparative degree (比较级): ________________________________________
2. Sickness (疾病): ____________________________________________________
3. Sports: ________________________________________________________
4. Past tense (过去式): _________________________________________________
维生素D中毒可致
A．血钙升高，血磷降低
B．血钙降低，血磷升高
C．血钙升高，血磷升高
D．血钙降低，血磷降低
E．尿钙降低，尿磷升高
