下列消化液中，不含消化酶的是
A：唾液
B：胃液
C：胰液
D：胆汁
WangYuan ,one of the TF Boys, is ____ at the UN Forum(论坛).
The number of the volunteers 100 now. And a small number of them already gone to the workplace.
下列固体中属于晶体的是（ ）
下列关于免疫的叙述，不正确的是（ ）
This is ____ apple. Those are ____.
