人体缺少维生素A会患 （ ） A．脚气病 B．夜盲症 C．佝偻病 D．坏血病
两个辍学的巨人 鲁先圣这几天，全世界因为一个人的去世而震惊和思考。他是全球计算机行业的领军人物、苹果公司创始人乔布斯。在
The traffic problems we are looking forward to seeing _______ should have attracted the government's attention. A. solving B. solve C.
下列物体属于光源的是 （ ） A.放电影时看到的银幕B.反射阳光的平面镜 C.月亮D.收看电视时看到的电视机屏幕
—What do you think of the film The Flowers Of War directed by Zhang Yimou? —_____．I can't think too highly of it． A．It all depends
下列各组元素性质的递变错误的是（ ）A.Li、Be、B原子最外层电子数依次增多B.P、S、Cl元素的最高正化合价依次升高C.B、C、N、O、F原子半径依次增
Many teenagers feel that the most important people in their lives are their friends．They believe that their family members don’t know them as well as their friends do．In large families，it i
