下列情况中物体的质量和密度都不变的是 [ ] A.水稻种子被“嫦娥一号”从地面带
题型：选择题
问题：
下列情况中物体的质量和密度都不变的是 [ ]
A.水稻种子被“嫦娥一号”从地面带入太空
B.密闭容器内的冰熔化成水
C.一支粉笔被老师用去一半
D.矿泉水喝掉一半后放入冰箱凝固成冰
题型：选择题
根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。（注意：涂在答题卡上，E涂 AB F 涂 AC G涂 AD）
_____小题1:_
________． Since that time, we've provided people like you --- te
achers, doctors, salespeople, full-time parents --- with a way of having a great time, challenging themselves and reconnecting with family and friends．
The non-stop routine of everyday life – answering e-mails, sitting in staff meetings ---- can have a dulling effect on people's senses． ____小题2:___． Otherworld provides just such an opportunity． It is an experience participants cherish and remember for years afterwards．
Coming to Otherworld is like stepping into the pages of an adventure novel． You'll meet a host of characters, portrayed by our staff, who'll start bringing the world to life． Mysteries will begin to unfold around you． 小题3:___． You' ll see amazing sights and do things you never dreamed possible．
Suppose you were traveling to a foreign country． When you arrived, you might read a guidebook or visit a tourist booth to familiarize yourself with the laws and customs of the place you were visiting． _____小题4:_____． Before the weekend, you'll receive a handbook, explaining Otherworld's customs and conventions． When you arrive at the weekend itself, there'll be a short briefing to review the handbook's contents．
Then you and your group are taken to the front door of the Inn at World's Edge． You'll see candles on each of the tables． A fire
will burn in the fireplace． At many of the tables, people will sit talking, arguing, and laughing． These people are our staff volunteers． ___小题5:____．But now they are all costumed and playing roles as citizens of the village of World's Edge．
A．And at that moment, the adventure begins．
B．Otherworld Adventure Weekend starts in much the same way．
C．They are the same people who welcomed you and helped you unload bags．
D．Maybe some of the local people would talk to you, telling you about nearby attractions． ． E． Otherworld was founded in 1992 with an idea: to give people an extraordinary adventure．
F． Therefore, everybody needs a relaxing weekend - a good adventure to refresh themselves．
G． As you and your friends work together to solve them, you'll find yourselves F.challenged in ways that are exciting, unexpected and fun．