男性，54岁。右上肺癌患者，在住院化学治疗期间渐起右下肢肿胀，疼痛。Doppler超

假性脑瘤

解下列方程：

（1）x²+x-1=0（结果保留根号）

（2）义乌经济的发展是一个奇迹，义乌的变迁如一幅画卷.2006年中国小商品城实现成交额315.03亿元，自1991年以来已连续16年位列全国市场成交额榜首．现已知1990年小商品城成交额6.06亿元，设1990年至2006年小商品城年成交额平均每年增长率为x，试用x列出方程．（不用求解）

Early in the 18th century, Captain Cook, a famous explorer of Australia, unexpectedly caught sight of an unusual animal during his first visit to Australia. The animal had a large mouse like head and jumped along on its large legs. To his great surprise, the unusual animal carried its young in a special pocket of flesh. Captain Cook pointed to the animal which was eating grass in the distance and asked his native guide what the animal was referred to. The guide seemed not to know that he was pointing at and finally said “Kang-a-roo”, but their requests were met with puzzled looks of the native people. Before long they got to discover that the native guide who made the answer to Cook’s question really meant, “I don’t know what you pointing at. “ Funny enough, the name “ Kang-a-roo”, stuck and it is still in use today.

小题1:Which of the following sentences best expresses the main idea?

A．captain Cook’s guide made a joke.

B．Native Australians could not speak English in Cook’s time.

C．Some words have rather funny origins (起源).

D．Captain Cook was a lover of wild animals.小题2:When the native guide said “Kang-a-roo ”, he really meant “ ______”

A．Ah, it is a special kind of animal

B．I wonder what you have said

C．What do you mean by pointing at that animal?

D．I have no idea of what you are referring to.小题3:We can infer from this passage ______.

A．we should learn many different languages

B．Captain Cook made a mistake in understanding

C．Captain Cook was a foolish explorer

D．the importance of a language in common

联轴器又叫对轮、靠背轮、（）。根据被联接两轴轴线相互位置是否重合分固定式联轴器、可移式联轴器两大类.

查照间隔是指（）至护轨头部外侧的距离。