供应物流考虑的因素（）A.供应市场的变化 B.供应商的关系维系以及管理 C.运输方式

Like most cultures around the world, the Zulu people of Africa tell stories that have animals as heroes. These stories are meant to have fun, but they are also used to teach important lessons to children. This is one of those stories.

One hot afternoon, Jackal was walking along the rocky road sniffing (嗅) the ground. He was hoping to smell a mouse or a lizard (蜥蜴), or something else that would be good to eat. He was so much lost in sniffing that he wasn’t really paying attention to what was around himself.

Suddenly, Jackal looked up to see his neighbor, Lion, walking straight toward him. He did not have enough time to run way. Jackal had played many tricks on Lion over the years, so he knew he would be in trouble if he was caught. Jackal needed to think of something quickly.

“Help! Help!” cried Jackal as he quickly jumped upon a large rock hanging over the road. “The rocks are falling down, and I can’t hold them much longer. We shall both be crushed (压碎) if you do not do your best to hold these rocks back, Lion”

At once, Lion pushed his strong shoulder against the rocks to keep them from moving any further. “I’ll just run over here to get something to stop the rocks.” shouted Jackal as he ran way to safety. Lion stayed leaning against the unmoving rocks for quite a long time before he realized that Jackal had tricked him yet again!

小题1: Why was Jackal sniffing the ground?

A．To play with Lion.

B．To push a rock

C．To run after a mouse

D．To look for something to eat.小题2:What does the underlined word ‘leaning’ mean?

A．supporting

B．sleeping

C．running

D．sitting小题3: Why did Jackal cry for help?

A．Because Lion was rushing to him.

B．Because he was caught under a rock.

C．Because he got an idea to get away from Lion.

D．Because he saw a large rock moving toward him.小题4: What lesson does the story teach us?

A．Trust（信任） your friend, trust yourself

B．Work hard, and you’ll succeed.

C．Help others when they are in trouble.

D．Try to find a quick way out when in trouble.小题5:Which words can describe Jackal’s characteristics?

A．selfish and stubborn

B．silly and unkind

C．clever and creative

D．impolite and dishonest

CM-800型连续采煤机两台截割电动机沿及其的纵轴线平行布置于截割臂的两侧，通过减速器将动力传递至左、中、右3个截割滚筒，中间无（）。

小军和小民在用图所示的实验装置完成了“测定滑轮组的机械效率”的实验后，想：在所用滑轮组一定的情况下，它的机械效率与哪些因素有关呢？两人根据各自的生活经验和所学知识提出了多种猜想，经过激烈讨论并虚心听取了其他同学的意见，最后形成了以下两个猜想：

猜想1 可能与提升的速度大小有关；

猜想2 可能与被提升的物体重有关。

小军和小民用图所示的实验装置对上面两个猜想进行了探究，得到的实验数据记录如下表。

（1）请帮助小民完成表中的一项计算；

（2）分析小军和小民的实验数据，得到的实验结论是：在滑轮组一定的情况下，它的机械效率与________有关；它们的关系是：______________。

尿标本保存常用哪些防腐剂？

某地一项有关高血压的横断面研究结果表明：男性40～49岁组有高血压者占12%，女性占11%。从而得出结论，该年龄组男性患高血压的危险性较女性大。此结论

A．正确
B．不正确，因为没有区分患病率和发病率
C．不正确，因为未用率做性别间比较
D．不正确，因为无对照
E．不正确，因为没有考虑到可能存在的队列的影响