问题 单项选择题 B1型题

氯乙酸AS-D萘酚酯酶染色呈阳性()

A.急性单核细胞白血病

B.急性淋巴细胞白血病

C.急性粒细胞白血病

D.多发性骨髓瘤

E.淋巴瘤

答案

参考答案:C

解析:POX染色:急粒时,白血病性原粒细胞可呈阳性反应,颗粒粗大局灶分布;急淋时,原淋和幼淋细胞呈阴性;急单时,白血病性原单细胞呈阴性反应,少数可呈弱阳性,颗粒少,常弥散分布。α-NAE染色单核细胞系统:原单为阴性或弱阳性;幼单细胞和单核为阳性,可被氟化钠抑制,抑制率在50%以上。粒细胞系统:各期均为阴性,少数可呈弱阳性,不被氟化钠抑制。急性粒细胞白血病时,氯乙酸AS-D萘酚酯酶染色白血病性原粒细胞可呈阳性反应,急性单核细胞白血病及急性淋巴细胞白血病时,呈阴性反应。

阅读理解

For many years, a small percentage of homeowners have fixed solar panels (太阳能板) on their rooftops. Those panels collect some of the sun’s energy and either change it into electricity or use it to heat water. Until recently, the panels were too expensive for average homeowners, and their designs were not attractive. Thanks to new advances, however, solar panels for homes are becoming cheaper and less large and heavy. Now more homeowners are considering using them.

Stores begin to sell Solar panels

Last fall furniture retailer(零售商) IKEA began selling solar panels in its U.K. stores. IKEA has brought the DIY solar choice to the public. While shopping for furniture, shoppers could not add a box or two of solar panels to their shopping cart (购物车). IKEA is partnering with a company. The company deals with fixing and servcing of the solar panels on the roofs. So it is easy for customers to change from old energy system to solar system. If all goes well, IKEA plans to begin selling the panels in other countries soon.

Stylish solar panels

SolTech, a Swedish company, offers a really great solar-power solution. Instead of flat panels, SolTech covers the panels with a special glass tile.  And the shape of the glass tile fits traditional tiled roof designs. SolTech recently offers solar systems that heat the home’s air or water. And it also offers one solar system that produces electricity.

______________

New technology has turned windows into solar panels. SolarWindow technology enables see-through windows to produce electricity after the glass surface is added with a special coating. Amazingly, SolarWindow can produce electricity in low-light conditons and can even turn indoor, man-made light into electricity! Since buildings are getting taller and about 60 percent of an office building’s surface is covered with windows, solar window could become a very popular way for people to produce energy and save money.

Turning your home –business-into a solar-powered one is a choice that’s becoming a lot more attractive these days!

小题1:This passage mainly talks about ______.

A.fashion shows

B.life in the UK

C.a technology

D.different opinions小题2:The reason why only a few homeowners used solar panels is that they are __________.

A.cheap but heavy

B.attractive but expensive

C.light and small

D.dear and not attractive小题3:.The DIY solar choice has been brought to the public so that _______.

the IKEA stores can sell more furniture in the U.K.

it is possible to make more panels in other countries.

more people will choose to use a new energy system.

people can get solar panels for free after buying furniture.

小题4:.The best title for the fourth paragraph is __________.

A.Making new kinds of windowns

B.Turning windows into solar panels

C.Changing our homes into panels

D.Adding electricity to the windows小题5:.The author’s attitude towards solar panels is _________.

A.positive     B.negative    

D.uncertain     D.questioning

单项选择题