婴儿湿疮根据发病年龄及皮损特点临床分为哪些型（） A.脂溢型 B.干燥型 C.渗出型

产生肺泡回缩压力的因素是（）

A．胸内负压

B．肺泡表面活性物质

C．肺的弹力纤维

D．呼吸膜内层液面的表面张力

已知某闭花受粉植物高茎对矮茎为显性，红花对白花为显性，两对性状独立遗传。用纯合的高茎红花与矮茎白花杂交，F₁自交，播种所有的F₂，假定所有的F₂植株都能成活，F₂植株开花时，拔掉所有的白花植株，在剩余植株中：

(1)若只考虑花色，纯合子所占的比例为_____________。

(2)若同时考虑两对相对性状，纯合子所占的比例为_______________。

要满足每天20g以上食物纤维的需要，至少每人每天应摄入蔬菜（）

A.750g

B.300～500g

C.200g

D.1000g

E.800g

From their beginnings New England towns had a special democratic system of government. At a stated time all the citizens would assemble at a town meeting, where they would discuss local problems and express opinions freely. They also elected the town’s officials at these gatherings and made decisions about the taxes they would pay and about other community matters. These meetings were usually held at the town hall, which was located in the central square.

In the eighteenth-century town meetings, only men who owned property and who were church members actually voted, although everyone present was allowed to express their opinions. Later, all citizens were allowed to vote. Thus the town meeting became truly democratic. Town meetings are still common in New England communities.

In recent years the town meeting idea has been widely imitated. There are open sessions of this kind on radio and television. Occasionally a meeting of this type is called by a government agency in order to give an opportunity for free and open discussion on current problems and policies.

小题1:At a town meeting, people do the following things EXCEPT __________. 

A．express their opinions about the government

B．elect officials of the towns

C．make a decision about whom they should marry

D．discuss some community matters小题2:In the 18th century, who had the right to vote?  

A．All the citizens.

B．All the men except those who were church members.

C．The rich.

D．The rich men and the church members.小题3:Why has the town meeting been widely imitated? 

A．Because many people are interested in it.

B．Because it is very democratic.

C．Because many people enjoy themselves at town meetings.

D．Because sometimes government agencies call them.小题4:According to the passage, which of the following statements is NOT true? 

A．Citizens can elect the officials in the town meeting.

B．In recent years, town meetings are often called by a government agency.

C．People can say what they want to say at the town meeting.

D．Nowadays this kind of meeting is also held on radio and television.小题5:This passage mainly talks about _______.  

A．the New England town meeting

B．modern town meetings

C．a democratic meeting

D．New England towns

下列关于人的表述中，最不符合生物学的角度一项是？（）

A、人是幸运的动物

B、人是被创造的动物

C、人是由28种元素组成的化合物

D、人是具有ATGC这四个遗传物质的存在