“五一”小长假航空公司为吸引顾客,将沈阳到南京的飞机票打四折出售。原来沈阳到南京的机票为950元,如果在这期间乘坐该航班,只需花费( )元就可购得机票。
380
3、4、9、12可以组成比例.如果确定3是比例的第一项,那么这个比例是______.
选择适当的词填空。
1. Be (careful, careless) crossing the road.
2. Videos are (useless, useful) to have in the classroom.
3. Smoking is (harmful, harmless) to your health.
4. He comes in with (noisy, noiseless) footsteps (脚步) to surprise her.
5. It is (meaningless, meaningful) to chat (聊天) on the line because no one will say the truth.
6. She is a nice lady. It's (hopeful, hopeless) trying to convince (说服) her.
7. I'm afraid the news isn't very (cheerful, cheerless).
8. Water is a (colourless, colourful) liquid (液体).