下图为显微镜观察中的两个视野，其中细胞甲为主要观察对象，由视野（1）到视野（2）时，操作过程的正确顺序是（ ） ①转动粗准焦螺旋 ②转动
引起人和动物患病的病毒、细菌、真菌、寄生虫等都是（ ） A、传染源 B、病原体 C、传播途径 D、病虫害
Peter’s jacket looked just the same as Jack’s，but it cost________his. A．as much twice as B.twice as much as C．much as twice as D.as twice much as
A road is a bridge between two places. The Silk Road has been a bridge between East and West for more than 2,000 years. But do you know the Silk Road is not a single route(路线)? It is a series
在本届冬奥会上，中国女子短道速滑队包揽4块金牌，创造历史奇迹。“三金王”王濛说，没有全队努力和队友配合，就没有我的成功，她的话启示我们
This is of an a _______ for children of a play by Shakespeare.
John Philips在青岛博爱中学任教期间，工作相当出色，最近他获该市“友谊”奖章。为此，China Daily准备刊登他的照片。请你就下表中所列的内容，写一篇
均不为零，
，且
，则
=
B．
C．
D．
