“以时点代时段”，“只见树木，不见森林”是说( )。
A．优先和近期效应 B．自我中心效应 C．实用效应 D．替代效应
参考答案：A
－How was your day off yesterday?
－Perfect! It was ________ birthday of my grandpa's. We had a big family celebration. [ ]
A. seventy
B. seventieth
C. the seventieth
钢丝绳索节是将钢丝绳未端穿过锥形套筒后松散钢丝，将头部钢丝绳变成小钩并浇入铅或锌液，凝固后即成。固定处的强度与钢丝绳的自身强度大致相同。
