在阳光明媚的周末，小张和家人一起到郊游垂钓，当小张的鱼钩第一次被鱼咬住时，小张非常激动，不由得面红耳赤，心跳加快．这是由于人体（ ）
A．血液循环系统调节的结果
B．神经、激素共同调节的结果
C．神经调节的结果
D．激素调节的结果
当你情绪激动时，大脑皮层就会特别兴奋，并通过支配肾上腺的神经促使肾上腺分泌较多的肾上腺素等．这些激素能够促使心跳加快、血压升高，并且促使皮肤因血管扩张而显得面红耳赤．因此在神经系统的调节控制下，激素通过血液循环的运输，也参与调节人体的生命活动．因此，在阳光明媚的周末，小张和家人一起到郊游垂钓，当小张的鱼钩第一次被鱼咬住时，小张非常激动，不由得面红耳赤，心跳加快．这是由于人体神经和激素共同调节的结果．
故选：B．
| 完形填空。 | ||||
| Today I am known for my voice. Perhaps the greatest honor came when I was asked to read the New Testament on tape. But it 1 a long time to believe such good things could happen to me. When I was a youngster I stuttered (口吃) 2 badly that I was completely 3 to speak in public. 4 ,when I was 14,Professor Donald Crouch came to our school. He was a retired college professor. Englishwas his favorite subject;poetry was his deepest love. He held a book of poems 5 it were a diamond necklace, tuming pages as if 6 treasures. When he heard our school was teaching Shakespeare and other classics, he could no longer 7 not being a part of our school. When he 8 that I not only loved poetry but was 9 it,we became closer. There was,however, one 10 between us-Professor Crouch could not stand the 11 that I refused to read my poems to the class. "Jim,poetry is 12 to be read aloud," he said. "You should be able to speak those beautiful words. " I shook my head and 13 . Then he tricked me. After handing in a poem,l waited for his 14 . It didn't come. Instead,one day as the students gathered together,he challenged me, "Jim,I don't think you wrote this. " I 15 him in disbelief. "Why," I started,anger flooding me,"of course I 16 !" "Well,then," he said, "you've got to prove it by getting up and reciting it 17 memory. " By then the other students had settled at their desks. With knees shaking,I walked up to the front. For a moment I stood 18 . Then I began,and kept going. I recited my poem all the way through! Afterwards,Professor Crouch congratulated me,and 19 me to read other writers' poetry before public. Before long I discovered I did have a(n) 20 and found my fellow students actually looked forward to hearing me recite. | ||||
|