据重庆时报2011年5月22日报道,目前重庆每年的煤炭生产量约4800万吨,将4800万用科学记数法表示为______万.
4800=4.8×103,
故答案为:4.8×103.
根据句意选择能代替画线部分的选项。
1. Which sport do you like better, basketball or football?
A. prefer
B. enjoy
C. have
D. love
2. Haikou, the capital of Hainan Province is a pretty city.
A.exciting
B. amazing
C. beautiful
D. large
3. You should not throw any rubbish about.
A. put; away
B. put; on
C. put; here and there
D. look; after
4. James Herriot was followed by his pet dogs named Hector and Dan, no matter where he went.
A. wherever
B. whenever
C. however
D. whatever
5. Stop talking. Your father is sleeping in the next room.
A. Go on talking
B. Please talk
C. Let's talk
D. Be quiet
一般认为,我国酸雨形成的主要原因是()等酸性气体进入大所后,逐步形成PH<5.6的酸性降水.
A、盐酸
B、二氧化碳
C、二氧化硫
D、氯氟烃