题目

单词拼写. 51. She _______________________________________(说) English very well. 52.My friend Mary likes ________________________________(看) sports shows. 53. Please be _________________________(安静), the child is doing his homework.. 54. I like koalas ______________________________(因为) they are cute. 55. Koalas like eating __________________________________________(树叶). 56. Do you like watching ____________________________________(女子) soccer? 57. The weather is _______________________________________(阴沉的) today. 58. The kids had great fun ______________太阳光通过三棱镜后，在白屏上形成一条彩色的光带，这种现象叫______．最早做这个实验的是英国科学家______．这个实验说明了：______．如果我们把一支温度计放在红光外侧，温度计的示数会上升，这是因为红外线具有______．为了让温度计的示数上升更明显，你的改进方法是______（写一点），如果把照相底片放在紫光的外侧，则底片会感光，这是因为紫外线能使______．