搜题请搜索小程序“爱下问搜题”
问题 单项选择题

关于呼吸下述哪一项描述是错误的（）

A.呼吸运动受呼吸中枢等因素的控制和调节

B.呼吸中枢是指中枢神经系统内产生和调节呼吸运动的神经细胞群

C.呼吸中枢仅位于大脑皮质

D.正常的呼吸最终是通过神经系统控制膈肌、肋间肌等呼吸肌来进行

答案

参考答案：C

单项选择题

进出第一肝门内的管道有（）

A.门静脉、肝静脉、肝胆管

B.肝动脉、门静脉、肝胆管

C.肝动脉、肝静脉、门静脉

D.肝总动脉、肝总管、门静脉

E.肝动脉、肝胆管、肝静脉
查看答案
单项选择题

Lemonade is a favorite summer drink. It is enjoyed at family meals, picnic, ball games, and many special parties. People like its light, lemony taste. They also like it because it keeps them from getting too thirsty. Do you drink it
Fresh lemonade can be made by cutting a lemon in half and squeezing the juice into a cup. After the seeds are taken out, sugar and water are mixed in. One cup of lemon juice, One cup of sugar, and two quarts of water stirred together make good lemonade.
There are even easier ways to get lemonade. One way is to buy lemonade powder. Then add the right amount of water. Another way is to buy cans of frozen lemonade and mix it with water. The easiest way of all is to buy and open a can of lemonade that is ready to drink, just like a can of juice.
Lemonade is good for people. It has vitamin C. It keeps the body cool in summer. When served hot it can help a bad cold or a sore throat.
Lemonade is not a new drink. It has been around for a long time. Some say it came from China. Others think it probably came from England or France. More than four hundred years ago an English doctor wrote about the good that lemonade can do for people.

In order to make good lemonade with one cup of lemon juice, we should add to it ______.

A．two spoons of sugar and two quarts of water

B．one cup of sugar and two quarts of water

C．one cup of sugar and one quart of water

D．one spoon of sugar and one quart of water
查看答案