DDRSDRAM内存条的引脚数为（）A.32线 B.72线 C.168线 D.184

用A幅面的图纸表示一栋85m长、25m宽民用住宅的平面图，应用的比例尺为( )。

A．1:1000

B．1:200

C．1:20

D．1:10

Humans have observed and explored the oceans since ancient times.But it wasn’t until the 19th century that the scientific study of oceans began.The first major scientific expedition,and the one that firmly established the field of oceanography,was the around-the-world voyage of H.M.S.  Challenger.Setting out from England in 1872,the Challenger spent almost three and a half years gathering a wealth of information about seawater,sea life,and the ocean floor.Major oceanographic expeditions since then have included the South Atlantic voyage of the German ship Meteor in 1926 and the Deep-Sea Drilling Project from 1968 to 1983.Many individuals also have played important roles in advancing our understanding of oceans,beginning with Matthew Fontaine Maury in the mid-1800s;his work on oceanography and navigation led to a uniform system of weather reporting at sea.Since Maury’s time,oceanography has progressed rapidly.Early oceanographers had to contend themselves with tossing buckets overboard to see what they might haul in.Today’s oceanographers are equipped with space images,supercomputer models,and deep-sea robots that can crawl along the seafloor.As they set goals for the future,some oceanographers even dream of doing research in permanently manned stations on the bottom of the oceans.

小题1:Which of the following statements is true?

A．Humans didn’t explore the oceans until the 19th century.

B．Maury first established the field of oceanography.

C．Maury spent a lot of time in studying seawater,sea life,and the bottom of the ocean.

D．Many individuals also plays a very important part in advancing our understanding of oceans,such as Maury.小题2:How many expeditions are mentioned in this passage?

A．Four.

B．Three.

C．Five.

D．Two.小题3:What can we infer from the passage?

A．The process of the oceanography has stopped at one time.

B．Maury’s work on oceanography contributes a lot to weather reporting at sea.

C．Nowadays the equipment for studying the oceans needs improving,because it is out of date.

D．The expeditions in the past had great difficulty and made a lot of efforts in order to study the oceans.

王女士和丈夫中年得子，这本来应该是一件令人高兴的大喜事。不幸的是，由于出生时孩子吸入了羊水，导致短暂窒息，出生后被诊断为脑瘫儿童。这让王女士的丈夫难以接受，所以对儿子一直都很抗拒，没有什么感情。他甚至想放弃这个孩子，但王女士不同意，决心要好好抚养这个孩子。现在，孩子已经三岁了。由于丈夫对孩子不管不问，而王女士也不知道该如何才能更好地照顾孩子，常常感到无能为力。现在，王女士为照顾孩子的事情常常与丈夫吵架。假如你是一位社会工作者，请你为王女士一家提供服务。

[问题]

在上述案例中，王女士一家面临的困境主要有哪些

神经中枢的加工处理过程所耗费的时间是反应时的主要部分。在实践中往往利用（）来近似说明人对信息处理过程的效率及影响因素。

在植物资源的调查中，冠径主要指灌木和乔木种类树冠的直径。