17.西北地区年降水量自东向西逐渐减少,由此地面植被的变化( )
| A. | 草原-荒漠草原-荒漠 | B. | 荒漠草原-荒漠-草原 | ||
| C. | 荒漠-荒漠草原-草原 | D. | 荒漠草原-草原-荒漠 |
14.有热带分布的省区是( )
| A. | ①③ | B. | ②④ | C. | ①② | D. | ③④ |
13.如图所示省区中,位置最东最北的是( )
0 85492 85500 85506 85510 85516 85518 85522 85528 85530 85536 85542 85546 85548 85552 85558 85560 85566 85570 85572 85576 85578 85582 85584 85586 85587 85588 85590 85591 85592 85594 85596 85600 85602 85606 85608 85612 85618 85620 85626 85630 85632 85636 85642 85648 85650 85656 85660 85662 85668 85672 85678 85686 133493
| A. | ① | B. | ② | C. | ③ | D. | ④ |