鳔是鱼体密度的调节器官.已知某种深水鱼鳔内氧气体积分数约占25%,其余主要为二氧

题型:填空题

问题:

鳔是鱼体密度的调节器官.已知某种深水鱼鳔内氧气体积分数约占25%,其余主要为二氧化碳和氮气.两组同学对这种鱼鳔内气体进行探究.

(1)测量鳔内气体体积.

甲组:用医用注射器,抽取鳔内气体,测量其体积;

乙组:在水下刺破鳔,用排水集气法收集并测量其体积(如图).其中______组的测量方法不合理,理由是______.

(2)验证鳔内的氧气和二氧化碳(提供两集气瓶的鳔内气体,供实验使用).

    方    法    现象与结论
  验证O2____________
  验证CO2

______

______

考点:二氧化碳的性质
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阅读短文,按要求完成短文后的各项任务。(本大题共5小题,满分10分)

There are many advantages and disadvantages for being a musician.

The biggest advantage is being able to do something you love. (1)You will have the        chance to travel to many different ______ and meet a lot of different ______. That will open up your eyes.

However, there are also disadvantages of being a professional(专业的) musician. (2)One of the biggest disadvantages for most musicians is that they don’t always have enough money. Most of the time, you will be looking for jobs. Sometimes you won’t be able to find a good job easily. Another disadvantage is the place you live in. If you want to be a musician, you usually have to move to an area that has a lot of jobs, such as New York City. The cost of living in these areas is usually very high. The third disadvantage is that you can’t have a stable(稳定的) family life. Different jobs will take a musician to different places, so most musicians are unable to have a regular family.

小题1:在(1) 空白处分别填入一个适当的词使句意完整、上下文通顺。

小题2:将(2)处的英文翻译成中文

小题3:在文中找出与It’s difficult for some musicians to find a good job sometimes.的同义句:

小题4:回答问题:How many disadvantages for being a musician are there in this text?

小题5:写出文中最能表达该短文主题的句子。

题型:填空题

急性肾盂肾炎抗生素用至症状消失,尿检查阴性后再几天可停药观察

A.2~3天

B.2~4天

C.3~5天

D.3~6天

E.3~7天

题型:填空题

面部口眼㖞斜,或肌肤不仁,并无其他疾苦者,属()

A.风中脏腑

B.热极生风

C.阴虚生风

D.风中经络

E.血虚生风

题型:填空题

对阑尾炎诊断最有意义的是()

A.血白细胞超过10.0×109/L

B.右下腹局限性压痛

C.腹部B超

D.转移性右下腹痛

E.腰大肌试验阳性

题型:填空题

物流系统工程中常用哪些技术?

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