沙尘暴形成的人为因素主要表现在[ ]
A.对土地滥垦造成大量土地荒芜
B.盲目增加放牧的牛羊导致啃食牧草过度
C.大量砍伐树木,破坏森林
D.以上三项都正确
答案:D
根据汉语意思完成句子.
1. My little brother wants _ (成为)a doctor when he grows up.
2. There is a history____(杂志)on the bed.
3. I know some famous____(演员)like Chen Baoguo.
4. Jack wants to be a (服务生).
5. My mother doesn't like my job because it's too (危险).
遵循历史成本计价原则,物价变动时,除国家另有规定者外,不得调整各项财产物资的账面价值。( )