《齐民要术》有一段描述:“凡五果,花盛时遭霜,则无子。天雨新晴,北风寒彻,是夜必霜。”据此完成6~7题。 6.下左图各条曲线中,能正确反映“天雨新晴,北风寒彻”天气的气压变化的是( ) A.④ B.③ C.② D.① 7.造成“是夜必霜”的原因主要是上右图中 ( ) A.a减弱 B.b减弱 C.c减弱 D.d减弱 —Mum,
I’ve been studying English since 8 o'clock. _____ I go out and play with
Tom for a while?
—No,
I’m afraid not. Besides, it’s raining outside now.
A.
Can’t
B.
Wouldn’t
C. May
not
D. Won’t