甜菜叶

①②③④四种金属片两两相连浸入稀硫酸中都可组成原电池，①②相连时，外电路电流从②流向①；①③相连时，③为正极；②④相连时，②上有气泡逸出；③④相连时，③的质量减少。据此判断这四种金属活动性由大到小的顺序是

A．①③②④

B．①③④②

C．③④②①

D．③①②④

将50g质量分数为20%的氯化钠溶液稀释成10%的氯化钠溶液，需加水（　　）

A．100g

B．25g

C．10g

D．50g

如图所示，用力F把重力为G的物体压在竖直墙上，物体处于静止状态，物体与墙壁之间的动摩擦因数为μ，则物体所受的摩擦力大小为（　　）

A．μF-G

B．μF+G

C．G

D．μG

Today, we’ll be discussing EQ: emotional intelligence quotient. Your emotional intelligence quotient seems to indicate how well you (1) your own emotions, and bow well you (2) to others.
EQ is not exactly a new idea, but the (3) itself is a new one. People have realized the way you control your feelings is just as important as your (4) — maybe even more important.
The focus of today’s session is: can you learn EQ Some (5) school teachers think that some kids have (6) EQ’s than others. Even at five or six years old, some of the kids tend to be much more (7) and (8) than others. Another example is that kids deal with (9) in different ways. One may get frustrated with a (10) problem, but another child, with a higher EQ, might be able to handle the situation better. She might try (11) ways to approach the problem, or ask for (12) .
Can you (13) to have a higher EQ People seem to have different views on this question. Most of the people believe that the answer to this question is (14) . For example, kids can be (15) to have patience and not to give up when things go wrong. They learn to respond well to their (16) But others don’t agree. They find that some people never learn to (17) their EQ. The problem is that people with a low EQ have a (18) time seeing how their behavior affects other people. They see no reason to (19) They’ll probably never adjust their (20) .

为什么平面设计师必须认识印刷工艺？它的意义是什么？