()指产品的外形实体,包括形状、商标、包装等。
参考答案:形式产品
Our teachers _______ study harder next term.[ ]
A. hope us to
B. hope that we'll
C. hopes that we'll
D. hope that we would
CD3和CD4抗原存在于
A.Th1和Th2细胞B.Th1和Tc细胞C.Ts和Tc细胞D.所有淋巴细胞E.单核吞噬细胞