车辆方位由（）、（）及车辆的（）来区分。

请品读以下短文，判断句子正（T）误（F）。

     Dogs are friends of man. They work for us. They hunt (狩猎) with us. They play with us. But once,

all over the world, dogs are wild (野生的).

     Dogs go back to the Stoen Age. All dogs had the same ancestor (祖先). It is believed that this

ancestor was much like a wolf (狼). Other animals like the fox, came from this ancestor, too.

     Thousands of years ago, man began to tame (驯服) the wild dogs . When the dogs were tame, they

were trained (训练). The strong dogs became working animals. They were trained to pull heavy loads

(担子). They learned to keep watch over the sheep and other animals. Working dogs had other jobs,

too.

     Some dogs were not strong. But they could help man hunt for game. Other dogs were best as pets.

At first, there were only a few kinds of dogs. Today there are more than 100 kinds.

( )1. The word in the story that means an animal far back in another animal's family is ancestor.

( )2. The story make us believe that Man has helped change animals.                              

( )3. The strong dogs turned into foxes.                                                          

( )4. Dogs are pets from the beginning.                                                          

( )5. Dogs and man have been friends for a long time.                                            

新农村民居建设贷款可采取（）等担保方式。

A.农户联保

B.房地产抵押担保

C.存单质押担保

D.信用担保机构担保

在一棵二叉树的先序遍历、中序遍历、后序遍历所产生的序列中，所有叶结点的先后顺序

A．都不相同

B．完全相同

C．先序和中序相同，而与后序不同

D．中序和后序相同，而与先序不同

男性，45岁，反复骨痛、乏力半年，尿检发现蛋白尿（+～++），血气分析提示酸中毒。肾活检示小管间质纤维化及炎症细胞浸润。反复骨穿未见异常，唇黏膜活检示慢性炎症。患者最可能的诊断（）.

A.多发性骨髓瘤

B.系统性红斑狼疮

C.强直性脊柱炎

D.类风湿性关节炎

E.干燥综合征

蛋白质特征元素是

A．氢

B．氧

C．氮

D．硫

E．磷