在激光诞生之前作为长度基准的单色性最好的是（）A、氩灯B、氪灯C、氙灯D、氦灯

What will the weather be like in the future? Some people say they can know the weather from animals.

If birds are flying high in the sky, there will be a nice day. When they sit in trees or stay close together, bad weather is on the way. Ants often build their homes on the steep (陡峭的) side just before the rain comes. Cats like to clean their ears before the rain. Chickens make a loud noise and run here and there when the rain is coming. Frogs will stay in the water and make a lot of noise, too. But on a nice day, they are quiet and jump out of the water. Turtles (海龟) often look for higher ground and cows like to lie down when the rain is on the way. 

小题1:How will the weather be if birds are flying high in the sky?

A．Sunny.

B．Windy.

C．Rainy.

D．Snowy.小题2:What do cats like to do before the rain?

A．Clean their feet.

B．Clean their ears.

C．Run everywhere.

D．Stay at home.小题3:How many animals does the passage mention (提到)?

A．Three.

B．Four.

C．Five.

D．Seven.小题4:What’s the best title for the passage?

A．Animals.

B．Animals like different weather.

C．The Weather.

D．Animals and weather.

经纪活动的作用具体体现在以下方面( )，以及推动市场规范完善。

A．传播经济信息

B．加速商品流通

C．优化资源配置

D．稳定市场房价

E．促进社会经济发展

浅表肾单位的特点之一为（）。

A、数目多

B、细段长

C、肾小体较大

D、髓袢长

心下坚满或痛，自利，利后反快，虽利心下续坚满；或水走肠间，沥沥有声，腹满、便秘、口舌干燥，舌苔白腻，脉沉弦或伏，此属

A．寒饮伏肺之支饮
B．邪犯胸肺之悬饮
C．饮留胃肠之痰饮
D．饮停胸胁之悬饮
E．脾阳虚弱之痰饮

关于建筑面积、使用面积、辅助面积、结构面积、有效面积的相互关系，正确的表达式是（）。

A.有效面积：建筑面积—结构面积

B.使用面积：有效面积+结构面积

C.建筑面积：使用面积+辅助面积

D.辅助面积：使用面积—结构面积