中度慢性肝炎的特征性病变是 A．点状坏死 B．桥接坏死 C．碎片状坏死伴桥接坏死 D

我说成语的上句，请你接下句。

1、以小人之心，（                    ）。

2、只许州官放火，（                    ）。

“低碳”成为2010年全国两会的一大亮点，北京某小学的学生小张发帖号召在全社会中开展低碳生活的实践活动，并且提出了争做“低碳生活小达人”的口号。他还倡议，全国的小朋友们能从现在做起，节约每一度电，每一滴水，节省每一张纸，每一度天然气；少乘汽车，多步行，少制造垃圾，多开动脑筋变废为宝等等。据此回答1～2题。

1．这位同学的做法可以[     ]

①培养动手能力

②提高自己的实践能力和适应社会的能力

③培养参与社会，奉献社会的意识

④使自己养成关心社会、关心国家发展的好习惯

A．②③④

B．②③

C．①②③④

D．②③④

2．向小张学习，我们应该[     ]

①放下学习，走上社会

②根据自己的年龄特点和学习实际积极参与社会活动

③通过社会调查、走访等方式了解社会，向政府献计献策

④积极参与社会生活，提高自己适应社会的能力

⑤积极参与社会公益活动，促进自己全面发展

A．①②③④⑤

B．①②③

C．②③④

D．②③④⑤

Before astronauts can go into space, they have to have the right suit. That’s why NASA（美国国家航天和航空局）scientists are developing a new kind of space suit——lighter and more flexible than before. These new space suits will have lots of mobility(灵活性) for the astronauts, but will not need much maintenance. NASA wants the suits to include new technology that can help astronauts be safe in outer space.

Right now, the American space suit weighs about 275 pounds and is big and massive. But the suit is also easy to work in for long periods of time. The Russian space suit is less complicated, but is used only a few times and then gets thrown away.

“Finding the right balance is always going to be a challenge,” said a long-time astronaut Jeff Williams. Williams has worn both types of suits. Space suits protect astronauts from both extreme heat and freezing temperatures. They carry life-packs with oxygen for the astronauts. They also shield astronauts from radiation, or particles that send out harmful rays.

Scientists are using computers to design the new suits. This allows them to change the design again and again, and to even test the design out before actually making anything. “There’s a lot more capable tools and technology to get the job done——a lot more knowledge, as well,” said Joe Kosmo. Kosmo helped design, develop, and test suits during the Mercury, Gemini, Apollo, Skylab, and shuttle periods.

These new space suits will be much lighter and use a new kind of complex material. They also will have a smaller life support backpack, thanks to tiny electronics. NASA hopes to have the first prototypes(原型) in development by 2010 and certify(证明) the suit by 2012. This will be in time for the launch of the Orion spaceship in 2014.

小题1: What characteristic does the new space suit have?

A．The new space suit will need much maintenance.

B．The new space suit will be heavier than before.

C．The new space suit will have less mobility than before.

D．The new suit will use new technology to help astronauts be safe in outer space.小题2:What’s the disadvantage of the Russian space suit?

A．The Russian space suit is big and massive.

B．The Russian space suit is much complicated.

C．The Russian space suit is merely used a few times.

D．The Russian space suit is easy to work in for long periods of time.小题3:The underlined word “shield” in the third paragraph might mean_______.

A．harm

B．protect

C．help

D．warn小题4:Why can scientists test the design out before actually making the new space suits?

A．Because designing the new space suit is not a complex task.

B．Because computers are being used to help scientists design the new space suits.

C．Because it needs little knowledge to design the new space suits.

D．Because the scientists only change the old space suits a little and make them into the new ones.小题5:How long will it take scientists to put the new space suits from prototypes into the first practical use?

A．Two years.

B．Three years.

C．Four years.

D．Six years.

1983年3月23日，在“福建省厂长、经理研究会”的成立大会上，55位厂长、经理提交了一封以《请给我们“松绑”》为题的联名公开信。一周后，《人民日报》对“松绑事件”作出报道，“松绑事件”成为国有企业改革的标志性事件。下列对“松绑”理解比较正确的是（     ）

A．加强国家对企业的监管

B．承认国有企业的私有化

C．扩大企业自主经营权

D．放弃对国有企业的管理

计算题：一直径为2m的钠离子交换器，001×7型阳离子交换树脂的装填高度为1.8m，试计算该离子交换器需装填多少001×7型湿树脂（树脂的湿视密度为0.8g∕cm³）？