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问题 判断题

黑洞比中子星的密度小。

答案

参考答案：错

选择题

含羞草受到碰触时，展开的叶片会合拢，这一现象说明生物能（　　）

A．由小长大

B．影响环境

C．对外界刺激作出反应

D．使种族得以延续
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谴词造句。根据每题所提供的图画情景和提示词，写一个与图画情景相符的句子。
1. Liu Xiang, not, winner, 2008 Olympics
                                                                                                                           
2. children, have fun, kites, last weekend 
                                                                                                                            
3. the boy, on, my brother 
                                                                                                                            
4. enjoy ourselves, soccer games, often
                                                                                                                            
5. will, set up, organization, protect, environment 
                                                                                                                            
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