题目:
电动洗碟(外部尺寸60x90x70厘米)()
答案:
参考答案:8422.1100
电动洗碟(外部尺寸60x90x70厘米)()
参考答案:8422.1100
当病人出现呼吸骤停时为兴奋呼吸中枢应选用()
A.地塞米松
B.尼可刹米
C.盐酸肾上腺素
D.去甲基肾上腺素
E.异丙基肾上腺素
阿华吃饭时,发现米饭在口腔里咀嚼片刻后感觉有甜味,这是因为( )
A.淀粉被分解成葡萄糖
B.脂肪被初步分解
C.蛋白质被初步分解
D.淀粉被分解成麦芽糖
库氏(Kussmaul)呼吸的特征是()
A.呼吸与暂停相交替
B.呼吸浅快交替出现
C.呼吸急促快慢不一
D.呼吸深大,频率较快
E.呼吸急促,常有屏气
Every year thousands of tourists visit Pompeii, Italy. They see the sights that Pompeii is famous for—its stadium(运动场)and theatres, its shops and restaurants. The tourists do not, however, see Pompeii's people. They do not see them because Pompeii has no people. No one has lived in Pompeii for almost 2 000 years.
Once, Pompeii was a busy city of 22 000 people. It lay at the foot of Mount Vesuvius, a grasscovered volcano(火山). Mount Vesuvius had not erupted(喷发)for centuries, so the people of Pompeii felt safe. But they were not.
In August of AD 79, Mount Vesuvius erupted. The entire top of the mountain exploded, and a huge black cloud rose into the air. Soon stones and hot ash began to fall on Pompeii. When the eruption ended two days later, Pompeii was buried under 20 feet of stones and ashes. Almost all of its people were dead.
For centuries, Pompeii lay buried under stone and ash. Then, in the year 1861, an Italian scientist named Ginseppe began to uncover Pompeii. Slowly,carefully, Ginseppe and his men dug. The city looked almost the same as it had looked in AD 79. There were streets and fountains, houses and shops. There was a stadium with 20 000 seats. Perhaps the most important of all, there were everyday objects, which tell us a great deal about the people who lived in Pompeii. Many glasses and jars had some dark blue colour in the bottom, so we know that the people of Pompeii liked wine. They liked bread too, metal bread pans were in every bakery. In one bakery there were 81 round, flat loaves of bread—a type of bread that is still sold in Italy today.
Tiny boxes filled with a dark, shiny powder tell us that women liked to wear eyemakeup.
Ginseppe has died, but his work continues. One fourth has not been uncovered yet. Scientists are still digging, still making discoveries that draw the tourists to Pompeii.
1.Why do large numbers of people come to Pompeii each year?
A.To visit the volcano.
B.To shop and eat there.
C.To watch sports and plays.
D.To see how Pompeiians lived.
2.Why had so many Pompeiians remained by volcanic Mount Vesuvius?
A.The city nearby offered all kinds of fun.
B.The area produced the finest wine in Italy.
C.Few people expected the volcano to erupt again.
D.The mountain was beautiful and covered with grass.
3.Why did the city uncovered look almost the same as it had looked in AD 79?
A.Because Ginseppe and his men dug it slowly and carefully.
B.Because the city was buried alive and remained untouched.
C.Because scientists successfully rebuilt the city with everyday objects.
D.Because nobody had lived in the city ever since the volcano erupted.
4.What do we know about the Pompeiians who lived 2 000 years ago?
A.They lived more or less the same as Italians now do.
B.They liked women wearing all kinds of makeup.
C.They enjoyed a lazy life with drinking and eating.
D.They went back to Pompeii after the eruption in AD 79.
大体标本的收集,方法正确的是()。
A.大体标本均来源于活检
B.主要通过动物实验的模型收集标本
C.大体标本均来源于尸检
D.根据教学需要,集中精力在短时间内搞突击收集
E.大体标本的收集是一项长期连续性工作,主要靠在尸检和活检时发现并收集