【单选题】What are the most important events in the Olympic Games?A.The track and field events.###SX
A.
What are the most important events in the Olympic Games? A.The track and field events.
B.
The horse-riding events.
D.
The boat.racing events.
【单选题】Most parents encourage their children to take an active part in social events, ______ those events do not interfere with their studies.
【简答题】Most parents encourage their children to take an active part in social s, ________ those s do not interfere with their studies. A) lest B) though C) unless D) provided
【单选题】What are the most important events in the Olympic Games? 查看材料
A.
The track and field events.
B.
The horse-riding events.
D.
The boat.racing events.
【单选题】What are the most important events in the Olympic Games?( )
A.
The track and field events
B.
The horse-riding events
D.
The boat-racing events
【单选题】在下列叙述中,正确的是( )。
A.
物体的温度越高,分子热运动越剧烈,所有分子的动能越大
D.
分子间的距离r存在某一值r0,当r<r0时,斥力大于引力;当r>r0时,斥力小于引力
【单选题】下列说法中正确的是
C.
物体的温度越高,分子热运动越剧烈,分子的平均动能越大
D.
分子间的引力与斥力同时存在,斥力总是小于引力
【多选题】关于布朗运动的说法正确是( )
A.
温度越高布朗运动越激烈,因此布朗运动就是分子的热运动;
C.
布朗运动同时还 悬浮的颗粒越大,布朗运动越明显
D.
在室内看到的尘埃不停地运动是布朗运动,是由于空气分子碰撞尘埃造成的
【简答题】This book discusses the most recent s of space travel, it certainly is ____. A:up to now B:up to this moment C:up to this point D:up to date