Scientists have claimed a milestone in the drive for new energy—development of the first practical artificial leaf, an advanced solar cell that imitates the process，called photosynthesis(光合
设函数与的图象的交点坐标为（a，b），则的值为__________.
屈肘时，下列骨骼肌的协作关系正确的是 A．肱二头肌舒张，肱三头肌收缩 B．二者同时收缩 C．肱二头肌收缩，肱三头肌舒张 D．二者同时舒张
What’s the ______ of her anger? She is usually not easy to get angry.A. reason B. idea C. cause D. problem
It was the middle of third grade and I was not sure what had got into me. I lied about many things—I lied I had eaten all my dinner, when 41 I buried it in the trash can. I lied that I ha
下列句子中，加点的熟语使用不恰当的一项是（ ） A.由于父母离异，我再也没有了从前的朝气，学习成绩也直线下滑，于是干脆破罐子破摔，旷课
几盏灯接入同一电路，其中一盏灯的灯丝断了不亮，其余几盏灯仍正常发光，则：A．坏的灯与其余的灯一定是并联的B．其余的灯一定是串联的C．坏的
下图是20世纪初的一则香烟广告，上面的文字写的是：“提倡国货，挽回利权”。下列有关对香烟广告的解读不正确的是 A．
