组成结肠肠腺的细胞有（）。
A.柱状细胞
B.内分泌细胞
C.杯状细胞
D.干细胞
E.潘氏细胞
参考答案：A, B, C, D
根据首字母或汉语提示，补全单词。
1. I _______ (参加) you for breakfast this morning.
2. My mother is making soup. It smells _______ (香).
3. They enjoyed _______ (种) vegetables.
4. He won. We are p_______ of him.
5. I built one of my rockets m_______ at home.
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