A:胆固醇、脂肪酸、脂肪酶
B:淀粉、半乳糖、糖原
C:氨基酸、核苷酸、丙酮酸
D:性激素、生长激素、胰岛素
On Children's Day, I can sing a s____.
If our government attention to controlling food safety now, our health ________ in danger.
They went there at ten ____( clock ) in the morning.