问题 单项选择题

关于颅内压的生理调节,下面哪种说法是错误的

A.颅内压增高时,脑收缩性血管管腔扩大,血管阻力下降,脑血流量增加
B.颅内压降低时,脑收缩性血管管腔缩小,血管阻力增加,脑血流量减慢
C.颅内压增高时,通过脑脊液的调节作用可使颅腔得到的体积缩减不会超过颅腔总体积的10%
D.动脉血的二氧化碳分压增高时,脑血管舒张,颅内压增高
E.颅内压增高时,主要靠脑组织缩减其体积的调节作用,使颅内压力可暂得以平衡

答案

参考答案:E

完形填空

完形填空(共20小题;每小题1.5分,满分30分)

阅读下面短文,从短文后各题所给的从四个选项中(A、B、C和D),选出可以填人空白处的最佳选项,并在答题卡上将该项涂黑。

Born in America, I spoke English, not Chinese, the language of my ancestors. When I was three, my parents flashed cards with Chinese 36 at my face, but I pushed them 37 . My mom believed I would learn 38 I was ready. But the  39  never came.

On a Chinese New Year’s Eve, my uncle spoke to me in Chinese, but all I could do was  40 at him, confused, scratching my head. “Still can’t speak Chinese?” He 41 me, “You can’t even buy a fish in Chinatown.”

“Hey, this is America, not China. I’ll get some  42  with or without Chinese.” I replied and turned to my mom for  43  .

“Remember to ask for fresh fish, Xin Xian Yu,” she said, handing over a $20 bill. I  44 the words, running downstairs into the streets of Chinatown.

I found the fish  45 surrounded in a sea of customers. “I’d like to buy some fresh fish,” I shouted to the fishman. But he  46  my English words and turned to serve the next customer. The laugh of the people behind increased 47  their impatience. With every 48  , the breath of the dragons(龙)on my back grew stronger---my blood boiling---  49  me to cry out, “Xian Sheng Yu, please.” “ Very Xian Sheng,” I repeated. The crowd erupted into laughter. My face turned  50 and I ran back home 51  ,expect for the $20 bill I held tightly in my pocket.

Should I laugh or cry? They’re Chinese. I’m Chinese. I should feel right at  52 Instead , I was the joke , a disgrace (丢脸)to the language.

Sometimes , I laugh at my fish      53  , but , in the end .the joke is on    54 . Every laugh is a culture     55  ; every laugh is my heritage (传统)fading away.

A. custom      B. games    C .characters .            D. language

A. ahead       B. around    C. along                 D. aside

A. when        B. before    C. unless                 D. until

A. success       B. study     C. time                  D. attempt

A. aim         B. joke      C. nod                  D. stare

A. cared about          B. laughed at       C. argued with      D. asked after

A. right now          B. from now        C. at times         D. in time

A. decision            B. permission        C. information      D. preparation

A. repeated            B. reviewed          C. spelled         D. kept

A. farm              B. stand             C. pond            D. market

A. guessed           B. forgot             C. doubted         D. ignored

A. by               B. as                 C. with             D. from

A. second            B. effort             C. desire            D. movement

A. forcing            B. allowing             C. persuading        D. leading

A. bright            B. blank              C. pale             D. red

A. open-mouthed     B. tongue-tied    C. empty-handed     D. broken-hearted

A. service           B. home              C. risk             D. root

A. trade             B. deed               C. challenge       D. incident

A. it                B. us           C. me                D. them

A. thrown           B. lost            C. divided           D. reflected

判断题