网上世博会的展馆分为浏览型展馆、体验型展馆和创意型展馆。

外观设计专利的保护期限为（）

A.5年

B.10年

C.15年

D.20年

E.30年

I find some of the ways in which Chinese parents show love for their children rather surprising. Obviously there are some pretty big differences between our behaviors and theirs in this respect. Most Chinese children seem to get whatever they want, from ice creams, sweets and toys to endless attention from the adults around them. Is this a sort of spoiling or love? I wonder.

Most westerners would think it is a sort of spoiling rather than love. We think love means educating your children and bringing them up to lead an independent life. That includes learning to accept the fact that he can't get everything he wants. As an adult, he will not always get the quite expensive car he hunts for; she will not always manage to acquire the beautiful dress she longs for. So we try to teach our children early to cope with the disappointment of not getting what they want.

I find too much such kind of love for the children can actually spoil them. To my surprise, it seems that the life of a Chinese child is rather hard. Without doubt, the child is the very center of a whole circle of adults, but on the other hand he or she is also expected to start studying according to adults' wishes. Many children of my son's age take piano lessons, painting classes and even English lessons. It looks as if Chinese adults think that just playing without learning anything is a waste of time. So in this respect our children appear spoiled, just because they are allowed to play. But without this sort of play how can western children develop such free and rich imaginations? In fact the connection between this imagination and the creativity is so important in the children’s future life.

小题1:In which way do most Chinese children seem to be spoiled?

A．They can be supported by their parents.

B．They can play whenever they want.

C．They need not behave themselves.

D．Their demands can always be satisfied.小题2:In the author's opinion, the life of a Chinese child is         .

A．rather hard

B．rather easy

C．independent

D．colorful小题3:The author thinks Western children appear spoiled because         .

A．they can manage time by themselves

B．they can have the freedom to play

C．they can take piano lessons

D．they may have expensive toys小题4:The best title of the passage could be         .

A．Chinese children's early education

B．How to develop kids' imagination

C．What is the real love for children

D．The imagination and creativity

静止在地面上的小物体，在竖直向上的拉力作用下由静止开始运动，在向上运动的过程中，物体的机械 能与位移的关系如图所示，其中0~s₁过程的图线是曲线，s₁-s₂过程的图线为平行于横轴的直线。关于物体上升过程（不计空气阻力）的下列说法正确的是

A．0-s₁过程中物体所受的拉力是变力，且不断减小

B．s₁-s₂过程中物体做匀速直线运动

C．0-s₂过程中物体的动能先增大后减小

D．0-s₂过程中物体的加速度先减小再反向增大，最后保持不变且等于重力加速度

鸟类适于飞行，与以下哪些特征有关（）①有气囊②身体呈流线型③体被羽毛，前肢特化成翼④食量很大，粪便及时排出⑤胸肌发达⑥心脏发达

A.①②④⑥

B.①②③④

C.②③④⑥

D.①②③④⑤⑥

价值是交换价值的（）

A.表现形式

B.基础或内容

C.结果

D.前提