识字教学内容的编排一是（），二是（）。

TD-SCDMA特有的切换方式是（）

A.硬切换

B.软切换

C.接力切换

D.越区切换

The idea that some groups of people may be more intelligent than others is one of those hypotheses that dare not speak its name. But Gregory Cochran is (1) to say it anyway. He is that (2) bird, a scientist who works independently (3) any institution. He helped popularize the idea that some diseases not (4) thought to have a bacterial cause were actually infections, which aroused much controversy when it was first suggested.

(5) he, however, might tremble at the (6) of what he is about to do. Together with another two scientists, he is publishing a paper which not only (7) that one group of humanity is more intelligent than the others, but explains the process that has brought this about. The group in (8) are a particular people originated from central Europe. The process is natural selection.

This group generally do well in IQ test, (9) 12-15 points above the (10) value of 100, and have contributed (11) to the intellectual and cultural life of the West, as the (12) of their elites, including several world-renowned scientists, (13) . They also suffer more often than most people from a number of nasty genetic diseases, such as breast cancer. These facts, (14) , have previously been thought unrelated. The former has been (15) to social effects, such as a p tradition of (16) education. The latter was seen as a (an) (17) of genetic isolation. Dr. Cochran suggests that the intelligence and diseases are intimately (18) . His argument is that the unusual history of these people has (19) them to unique evolutionary pressures that have resulted in this (20) state of affairs.

18（）

A.linked

B.integrated

C.woven

D.combined

根据业主要求需要在一混凝土厂房内用

形钢制刚架搭建一个不直接承受动力荷载的工作平台。横梁上承受均布荷载q=45kN/m(设计值)，柱顶有一集中荷载P=93kN (设计值)。钢材为Q235-B·F。刚架横粱的一端与混凝土柱铰接(刚架可不考虑侧移)：其结构的计算简图、粱柱的截面特性以及弯矩计算结果如题图所示。
提示：柱间有垂直支撑，A、B点可作为AB柱的侧向支承点。
柱：A=8208mm² 梁：A=9440mm²
l_x=13850×10⁴mm⁴l_x=34610×10⁴mm⁴
W_x=923×10³mm³ W_x=1525×10³mm³
i_x=130mmi_x=192mm
l_y=3130×10⁴mm⁴ S_x=848×10³mm³
i_y=67.7mm

假定横梁在B点处采用托板支座与柱连接(托板刨平顶紧)，梁的支座端板用C级普通螺栓(3号钢)与局部加厚的柱翼缘板相连，其螺栓布置如下图所示。应选用 ( )项公称直径的螺栓方为正确。
提示：连接处的弯矩设计值近似取B点的弯矩值，并假定中和轴在底排螺栓线上。

A．M20
B．M22
C．M24
D．M27

《关于党政机关工作人员个人证券投资行为若干规定》规定，要规范党政机关工作人员个人证券投资行为，这其中不包括（）。

A.买卖股票

B.买卖证券投资基金

C.买卖其他股票类证券及其衍生产品

D.买卖政府债券

下列哪项无助于呼吸衰竭病因（）

A.肺通气灌注扫描

B.血生化

C.X线胸片

D.动脉血气分析

E.肺功能