下列说法表示时刻的是（ ）
A．第5s末
B．前5s内
C．第5s内
D．从第3s末到第5s末
A、第5秒末，在时间轴上对应的是一个点，是时刻，故A正确；
B、前5s内是从0时刻到5秒末之间，在时间轴上对应一段距离，是时间，故B错误；
C、第5s内是1s钟的时间，在时间轴上对应一段距离，指的是时间，故C错误；
D、第第3s末到第5s末，在时间轴上对应一段距离，指的是时间，故D正确．
故选：A．
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o'clock. He brushes (刷) his teeth (3)______ eats breakfast. After breakfast he plays his guitar. Then he goes to see his grandfather (4)______ his parents. They (5)______ some fruit for his grandfather. His grandfather is very (6)______ to see them. They have lunch together (一起). (7)______ the afternoon Mike goes to the basketball club. There he plays basketball for (8)______ hour (小时). Mike (9)______ home at five o'clock. At five thirty he eats dinner. Mike goes to bed at ten thirty. This is Mike's (10)______. |