( )是逐步深化、逐步细化和逐步接近实际造价的过程。A．个别计价B．多次计价C．组合

We talk every day. When we have good news, we like to share it with our good friends and when something terrible happens, we tell it to others soon. But can you imagine that a tree can talk and share news too ? Of course, no tree moves lips and says words just as people do. Strange as it may sound, though, some trees do manage to communicate with each other.

Willow (柳树) trees are the best-known of these trees. When insects begin nibbling (叮咬) a willow tree, the tree sends out a special smell at once. This smell tells the other willows that harmful insects are coming near. All of them quickly make a chemical (化学物质) in their leaves. This chemical is bad to the insects. The insects do not like it and they fly away soon. In this way, the willow trees protect themselves from the insects.

The next time when you take a walk in the woods, maybe the trees are “talking” to each other quietly. And when someone says that trees cannot “talk”, please tell them that even trees give messages to each other, too.

小题1:Willow trees send messages with_____________.

A．words

B．movements

C．smells

D．sounds小题2:The underlined word “lips” in the first paragraph means _____________.

A．树干

B．嘴唇

C．枝条

D．手势小题3:The passage tells us that some of the trees can _____________.

A．speak just as people do

B．tell stories to others

C．communicate with each other

D．kill insects in the woods小题4:According to the passage, the right order of the following is _____________.

a.  The willow tree gives out a smell.

b.  The willow trees make a chemical in their leaves.

c.  Insects fly away because of the chemical.

d.  Insects begin nibbling a willow tree.

A． d---a---b---c

B． d---b---a---c

C． a---b---c---d

D． d---c---b---a

以下哪项是结核菌素试验强阳性结果（）

A.硬结直径≥12mm

B.硬结直径≥15mm

C.硬结直径≥10mm

D.红晕直径>20mm

E.硬结直径>20mm

为了区分海水和淡水，可以加入下列那种试剂（　　）

A．紫色石蕊试液

B．硝酸银溶液

C．氢氧化钠溶液

D．酚酞试液

关于结核性腹膜炎的诊断，错误的一项是（）

A.结核菌素试验阴性亦不能排除本病

B.不能强调腹壁柔韧感等典型表现为诊断条件

C.诊断困难者可行抗结核诊断性治疗

D.腹水动物接种较细菌培养阳性率高

E.首选诊断手段是腹腔镜检查

城市化是人类生产与生活方式由农村型向城市型转化的历史过程，表现为乡村人口向城市人口转化以及城市不断发展和完善的过程。党的十七届三中全会会议公报指出，到2020年，城乡经济社会发展一体化机制基本建立。
根据以上定义，下列对城市化的理解正确的是：( )

A．大批的农民迁移到城市，由农民变为市民
B．农民进城的数量越多，说明城市化率越高
C．农民进城越多，这个地方的社会发展越先进
D．农民生产方式的工业化程度越高，这个地方的社会发展越先进