长江中游的治理措施是人工裁弯取直和加固大堤，其人工裁弯取直中主要是为了解决（ ）
| A．河道特别弯曲，妨碍航运 |
| B．水流太急，易成水灾 |
| C．泥沙淤塞河床，水流不畅，造成水灾，妨碍航运 |
| D．开垦两岸沙洲，发展农业生产 |
相关试题
Susan's mother looks so young．It's hard to imagine she's already in her ______．（
A．sixtyB．sixtiesC．sixtieth
With the development of modern technology，we prefer taking photos with ______ instead of camera．（ ）
A．
B．
C．
﹣I have been to Mars several times．
﹣You ______ be joking．It's impossible．（ ）
A．canB．mayC．must
﹣A Spring Morning is my favorite poem ____ has beautiful words．
﹣I'm fond of it，too．（ ）
A．whoB．whichC．whom
粤公网安备 44130202000953号