在爆破地点20m以内,有矿车,未清理的煤、矸或其他物体填塞巷道断面的()以上时,严禁装药放炮。
A、1/2
B、1/3
C、2/3
参考答案:B
A.A、B运动的方向总是相同的
B.A、B运动的方向总是相反的
C.A、B运动的方向有时相同、有时相反
D.无法判断A、B运动的方向的关系
根据句意,用适当的介词或连词填空
1. Tom was watching TV____I was reading.
2. We do morning exercises every day____on rainy day.
3. You should be out ____staying at home on such a fine day.
4. We learn other subjects____English.
5. this way doesn't work, let's try another.
6. Could you help me take care_____these dogs?