A:开发氢燃料电池客车
B:使用太阳能路灯
C:尾气直接排放
D:分类回收垃圾
____ I'm fine,thanks.
____ Hello, Danny. How are you?
____ What's this?
____ Oh. It's a desk.
____ I'm fine, thanks. And you? (你呢?)
选择。把下面能拼成的音节请写下来。
ch---u sh---ü zh---u r---ü ch---ü sh--u zh---ü r---u
____ ____ ____
下列正确的是( )
big