“任性”是2014年火起来的一个网络用语，是“由着自己的性子来”的缩写。随着互联网的快速发展，我们的生活越来越离不开网络。但在微博、微信、QQ 等公共空间决不可“任性”。这表明（    ）

①公民的权利和义务具有一致性，享受网络便利的同时要履行相应的义务     ②公民要在法律允许和许可的范围内行使权利

③所有网络造谣行为均属于犯罪行为                                                                     ④公民在行使自己权利的同时，不得损害他人的合法权益

看图回答问题．

（1）图A是心脏结构图，据图回答．

①在心脏的四个腔中，图中代表左心室的编号是____ 

②血液从图中D出发流进b，最后汇集到c流回到A的过程叫____ 

③图中流静脉血的血管有____ ．（填编号）

（2）图B是血涂片在显微镜下的一个视野图．请据图回答：

①写出图中字母代表的血液成分．

A____   B____   C____   D____

②人体的血液呈现红色，是因为哪种血细胞（填编号）中含有哪种物质所致？____ ．

③能吞噬侵入人体内的病菌，从而保护人体健康的是____ ；促进止血和加速血液凝固的是____ ；担负运输养料和废物功能的是____ ．（填编号）

    Tom's school basketball game is next month. His class 1 a new player. His teacher asks him to be one. of the players 2 he is tall (高的). But Tom doesn't like 3 sports. He can't play basketball 4 and he thinks it is 5 for him, so he calls his friend Edward to help him. Edward says he'll help Tom 6 his basketball skills (技巧). They have about 20 days to prepare for (为……做准备) the game, and in the next three 7 they play basketball for 2 hours a day. They don't have much 8 at school, so they play it after the classes 9 .Tom is tired (疲倦的) but happy every day. Now, Tom loves 10 He thinks it is relaxing and fun.

物体在水中向下沉时（　　）

填空题。