题干

如图是人体部分生理活动示意图,请据图回答:

(1)淀粉在消化道内被消化成葡萄糖,参与此过程的消化液有____ 

(2)若在手背静脉注射抗生素治疗咽炎,则药物到达患病部位需经过心脏A腔 ____ 次.

(3)在心脏和血管组成的密闭管道内,血液只能按照一定的方向流动,而不会倒流,其主要原因是____ 

(4)图中所示与外界相连的4条途径中,通过检测途径____ 的样本,可以判断某人是否可能患有糖尿病,此病主要的治疗方法是____ 

(5)当血液流经肺部毛细血管网后,血液中的氧及二氧化碳的含量变化是____ .

上一题 下一题 0.0难度 选择题 更新时间:2018-06-01 09:02:04

答案(点此获取答案解析)

唾液、胰液、肠液,1,心脏和静脉血管中有瓣膜,2,注射胰岛素制剂,氧气增多,二氧化碳减少

同类题1

选择合适的选项补全短文。

    I still remember that summer before college.There were plans and ideas about what my college experience was going to be like, but none of them worked out as planned.____.

    Use the mental health services available to you.

    That first night at college was memorable. There was scare and homesickness. Missing things from home wasn't the only reason why I felt down. The academic pressure to succeed and the social pressure to fit in are too much for some people, which don't just happen in the freshman year.____ Close friends always guided me, which was important because talking helps—even if it's just with a friend. Don't be afraid to take that extra help.

    ____

    I had been ready to major in politics, philosophy and economics, in preparation for a law degree.Things changed.

    You meet new people and discover new interests.____ So, don't worry if you haven't figured out exactly what you're going to major in. It will likely change anyway.

    You're there to get a degree, but a little fun won't hurt.

    As time goes by, I'm not going to remember the grades I got on papers or the late nights spent studying. Instead, lifelong memories will include playing video games with my roommate at 3:00 am, or late-night runs with my friends after a night out. Apart from doing well inside the classroom, there are also internships(实习期) and other pressures. Employers might weigh internships more heavily than your GPA.____.

A. It's OK to change your mind about your major.

B. You don't want to get tired of your college life early.

C. Everyone says that college is the best four years of your life.

D. Here are the things I wish I had known before my freshman year.

E. It's normal to be a little unsure of your plans once you start taking classes.

F. Getting internships and having fun with friends are also of great importance.

G. For me, there were upsets long after the days that required a map to go anywhere.