用显微镜观察玻片标本时若光线较暗，则应使用（ ）A． 大光圈、平面镜 B． 大光圈、凹面镜C． 小光圈、平面镜 D． 小光圈、凹面镜
The plane flew higher and at last it in the sky. A. was missed B. disappeared C. was disappeared D. couldn’t see
图甲是一个单摆振动的情形，O是它的平衡位置，B、C是摆球所能到达的最远位置．设摆球向右方向运动为正方向．图乙是这个单摆的振动图象．根据图
Low-carbon lifestyle is of great benefit to improve the world environment ．_____can be enjoyed from it until you have a deep understanding of it，however． A．Something B
民族区域自治制度是我国的基本政治制度，符合我国国情，具有巨大优越性。民族区域自治的前提和基础是 （ ） A．领土完整
86. We should take exercise regular, which will be good to our health. 87. He asked me what I should deal with the waste newspaper. 88. He said he had b
9．下列句子横线上依次应填入的词语是（ ） ①没有深厚的生活积淀和艺术功底是写不出______高的诗歌作品的。 ②舒婷把这种深厚的感情________
The lower East Side is neither rich nor beautiful, but it can be a good place to shop. On Sundays, its streets are crowded with visitors and shoppers like these. They are trying to find a coat or a
