71. He was ___ (defeat) at chess last night. 72. She showed me her stamp

71. He was ___________ (defeat) at chess last night.

72. She showed me her stamp ____________ (collect).

73. The doctor asked me to take two _________(tablet) of this medicine each day.

74. The new edition textbook is ________________ (publish) by the Department for Education.

75. I cut my finger while cutting the apple and it was ____________ (blood).

答案

71. defeated 72. collection 73. tablets 74. published 75. bleeding

制备纳米薄膜装置的工作电极可简化为真空中间距为的两平行极板，如图甲所示，加在极板A、B间的电压作周期性变化，其正向电压为，反向电压为，

After the long journey, the three of them went back home, ______.A. hungry and tiredly B. hungry and tiredC. hungrily and tiredly �

克隆羊的成功轰动世界,它不仅奠定了克隆性治疗疾病的基础,又解决了器官移植中供体不足的问题,同时也给人类带来了一些过去尚未遇到的问题。下图

谣谶是带有一定目的性、被当做预言来传唱的歌谣。后周时，有人制造“点检作天子”的谣谶，周世宗为绝后患，撤掉殿前都点检张永德，以赵匡胤代

根据图填空：（1）反应物是；生成物是．（2）在2min内用A、B、C表示的化学反应速率分别为．（3）该反应的化学方程式是．

若向一潮湿的容器中通入SO2和H2S气体共1 mol，充分反应后所得氧化产物比还原产物多8 g，则通入SO2和H2S的物质的量之比为( ) ①1∶1 ②1∶2 ③1∶3 ④3∶2 A

氨在工农业生产中应用广泛。在压强为30MPa时，合成氨平衡混合气体中NH3的体积分数如下：温度/°C200300400500600 氨含量/%89．971．047．026．413．8 请回答

化学反应的实质是旧键断裂，新键的形成，据此下列变化不属于化学反应的是A．白磷在260℃时转化为红磷 B．石墨转化为金刚石C．N