A:27
B:81
C:84
D:48
给加下划线的词语选择合适的一项,只填序号。
一束阳光透过叶缝照在她的满头银丝上。( )
(Ⅰ)求B,C两点间的距离(结果精确到1m);
(Ⅱ)若规定该路段的速度不得超过15m/s,判断此轿车是否超速.
参考数据:tan31°≈0.6,tan50°≈1.2.
We need two students____ (clean)the classroom.
They need help at the old ____ (people)home
Do you make any ____ (friend)here?
Mr.Wang teaches ____(they)math.
Sally is busy ____ (do)her homework.