抗原的特征不包括[ ]
A.异物性
B.大分子性
C.特异性
D.化学本质是蛋白质
答案:D
We had over 120,000 people here at ________ weekend and expect to have up to ________ third of that number on the beach today.
A.the;a
B.the;the
C./;a
D.a;the
0.08的倒数是______,2.25的倒数是______.