混凝土板块切缝不及时会产生（）裂缝。
A.纵向
B.横向
C.交叉
D.网状
参考答案：B
正常人血浆中惟一不存在的凝血因子是______，其在_____、____、_____组织中含量极为丰富。
He was so cold, he seemed so proud, ________ every time she met him, she experienced a kind of emotional electric shock.
A．after
B．since
C．yet
D．for
