阅读下面一首唐诗，回答问题。（8分）

春兴  武元衡

杨柳阴阳细雨睛，残花落尽见流莺。

春风一夜吹乡梦，又逐春风到洛城^①。

【注】①武元衡的家乡在洛阳城附近的缑氏县。

（1）诗歌第一、二句描写的是哪一个时节的景色？何以见得？（4分）

（2）三、四句是这首诗的佳句，请指出其中最富表现力的两个字，并分析其妙处。（4分）

In low-speed network, it is usually adequate to wait for congestion to occur and then react to it by telling the source of packets to slow down. In high-speed networks, this approach often works poorly, because in the (61) between sending the notification and notification arriving at the source, thousands of additional (62) may arrive. In ATM network, a major tool for preventing (63) is (64) control. When a host wants a new virtual (65) , it must describe the traffic to be offered and the service expected.

A．flow

B．admission

C．traffic

D．time