题干

课外活动小组同学在适宜的温度下,以葡萄为材料所做的几组实验(假设该植物在24小时内呼吸速率不变),结果记录如图所示,请分析回答下列问题.

(1)实验中影响葡萄植株光合作用的外界因素主要有____和____ 

(2)图一的实验结果表明,在栽培农作物时要注意____ 

(3)经检测,葡萄植株一昼夜的CO2净吸收量为250mg,图二中阴影部分所表示的CO2吸收量应____ (填“大于”、“等于”、“小于”) 250mg,则该植株一昼夜内通过光合作用固定的CO2总量是____  mg.

(4)图二中C点与D点相比,叶绿体中C3含量的变化是____ ,直接原因是____ 不足.若适当增加植株生长环境中CO2的浓度,图二中的B点将向____ (填“左”或“右”)移动.

上一题 下一题 0.0难度 选择题 更新时间:2019-12-27 11:13:24

答案(点此获取答案解析)

\u5149\u7167\u5f3a\u5ea6,\u4e8c\u6c27\u5316\u78b3\u6d53\u5ea6 \uff08\u987a\u5e8f\u53ef\u98a0\u5012\uff09,\u5408\u7406\u5bc6\u690d,\u5927\u4e8e,370,\u4e0b\u964d,\u4e8c\u6c27\u5316\u78b3\u5438\u6536\u91cf\uff08\u4e8c\u6c27\u5316\u78b3\u4e5f\u7

同类题1

根据短文内容,从短文后的七个选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

Writing A Letter To Your Future Self

    Just imagine writing a letter to your future self 5 years from now, then opening it at that exact moment to see how much of it has come true. ____

    As you read the letter in the future, you can assess how many things agree with your expectations in the past. ____ Often times, the goals we set and our goal achievement process are affected by a lot of changes along the way. The letter lets you recognize how your current idea differs from the past.

    In addition to that, at the very moment you are writing the letter, your thoughts are stored right there in those words. When you open the letter in the future, you as your future self gets to compare how you used to be in the past with how you are now.  ____. It's very interesting to do so.

    Take out a pen and paper right now and start writing your letter to your future self. Set a time period to write to. ____ Then start writing. Think about the type of person you will be, your place in life, what you will have realized then, and so on.

    ____ Put it in a safe space where no one can find it. When you open this sometime in the near future, you might gain additional insights(了解) about yourself and your journey in the past few years.

A. And you can think about why that's the case.

B. It is a useful tool to be used in goal achievement.

C. Imagine how you will be like during that time period.

D. If you haven't, join me in writing a letter to yourself.

E. This lets you see how much things have changed since then.

F. At the end of the letter, write the date to open it on the cover.

G. It wasn't until we moved into our new house that I found it again.