温度催延花期的主要作用（）A.打破休眠 B.花芽分化 C.春化作用于 D.影响花茎的

She is going to fly kites _____________ the weekend. [ ]

A. on

B. in

C. for

男性患者，34岁，进食大量酸菜后出现发绀，吸氧后发绀无缓解。该患者血中的高铁血红蛋白含量至少为

A．10 g/L

B．20 g/L

C．30 g/L

D．40 g/L

E．50 g/L

幽门梗阻的典型特征是

A．剧烈上腹痛

B．呕吐宿食

C．停止排便排气

D．空腹时呕吐更为严重

E．喷射性呕吐

What an _____ question it sounds! Even my daughter can answer it ________.

A．easy, easy

B．easy, easily

C．easily, easy

D．easily, easily