读下面“地质构造或地貌景观图”,回答19~20题。 图示中主要由内力作用形成的是
图示中由内外力共同作用形成的是
You waste much time______pig flu.on the internet..
---- Is there a vaccine _____ pig influenza?, I’m anxious to know. ----- Don’t worry, there is a vaccine _____ for pigs against pig influenza
Has she had a cold like pig flu. _____? for she is absent.
The teacher criticize me, so I must finish my essay about agriculture,farmer and rural areas today______.
----- Would you like to climb the Mountain Tai on May Day? _____, I’d like to.