生化需氧量用()来表示
A、BOD
B、COD
C、TOD
D、TOC
参考答案:A
找出错误并改正。
1. I'm going read a magazine.
2. I'm going Sunday morning.
3. Where are you going to do on the weekend?
4. Where are you going to the supermarket?
5. I want to go there on bike.
近来,海盗在亚丁湾海域频频出没.是因为西亚和北非处在印度洋和大西洋的重要国际航线上,沟通这两大洋的咽喉是( )
A.苏伊士运河,直布罗陀海峡
B.巴拿马运河,麦哲伦海峡
C.苏伊士运河,马六甲海峡
D.巴拿马运河,土耳其海峡