阅读下面短文，从短文后各题所给的A、B、C、D四个选项中，选出最佳选项。

    What is your favourite colour? Do you like yellow, orange or red? If you do, you 1 be an optimist, a leader, or an active person   2 enjoys life and excitement. Do you prefer gray or blue? Then you are probably 3, shy and you would rather follow than 4. If you love green, you are strong minded and determined. You wish to succeed and want 5 people to see you are successful.

    This is what psychologists tell us, and they are sure about this, because they have been seriously studying the meaning of colour preference, 6 the effect that colours have on human beings. They tell us that we won't change our favourite colour as we grow up. A yellow room makes us feel more cheerful and comfortable 7 a dark green one, and a red dress brings warmth and cheer 8the saddest winter day.

    But black is depressing. Light and bright colours can make people not only happier but more active. It is a fact that factory workers work better, harder, and have 9 accidents when their machines 10 orange rather than black or dark grey. Remember that, if you feel low, you can always cheer up your day or your life with a new shirt or a new colourful thing.

某些废旧塑料可采用下列方法处理：将废塑料隔绝空气加强热，使其变成有用的物质，实验装置如图．加热某废塑料得到的产物如表：

（1）试管B收集到的产品中，核磁共振氢谱显示有四个吸收峰的有机

物与氢气加成后所得产物的一氯代物有　 ____　种．

（2）试管A中残余物有多种用途，如下列转化就可制取高聚物聚乙炔．A中残留物电石乙炔聚乙炔

写出反应②的化学方程式　 ____　．

（3）ZnC₂、Al₄C₃、Mg₂C₃、Li₂C₂、Mg₃N₂等与CaC₂和H₂O反应相似．请通过对CaC₂制C₂H₂的反应的思考，判断下列反应产物正确的是　 ____　．

A．ZnC₂水解生成乙烷（C₂H₆）       B．Al₄C₃水解生成甲烷（CH₄）

C．Mg₂C₃水解生成丙炔（C₃H₄）      D．Li₂C₂水解生成乙烯（C₂H₄）

E．Mg₃N₂水解生成氨气（NH₃）

​

阅读下面文言文，完成下列各题。

蒙骜^①伐魏

    蒙骜帅师伐魏，取高都、汲^②。魏师数败，魏王患之，乃使人请信陵君于赵。信陵君畏得罪，不肯还，诫门下曰：“有敢为魏使通者死！”宾客莫敢谏。毛公、薛公见信陵君曰：“公子所以重于诸侯者，徒以有魏也。今魏急而公子不恤^③，一旦秦人克大梁，夷先王之宗庙，公子当何面目立天下乎！”语未卒，信陵君色变，趣^④驾还魏。魏王持^⑤信陵君而泣，以为上将军。信陵君使人求援于诸侯。诸侯闻信陵君复为魏将，皆遣兵救魏。信陵君率五国之师败蒙骜于河外，蒙骜遁走。

（选自《资治通鉴》）

【注释】①蒙骜（ào）：秦国大将。②高都、汲：地名。③恤：体恤，顾惜。④趣（cù）：催促。⑤持：握着……的手。

- What can you see?

- I can see a seesaw.

彩虹的美丽在于它的七色光彩，班级的美丽在于我们每个人的（    ）