题干

阳光穿过森林空隙形成的“光斑”会随太阳移动和枝叶的摆动而移动。如图表示一株生长旺盛的植物在光照射前后光合作用过程中与吸收CO2和释放O2有关的变化曲线,此曲线率说明(  )

A:光斑照射后O2释放曲线的变化说明暗反应对光反应有限制作用

B:光斑照射开始后,光反应和暗反应迅速同步增加

C:光斑照射前光合作用无法进行

D:CO2曲线中AB段的变化说明进行暗反应与光照无关

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A

同类题2

根据短文内容,从短文后的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。

    Having a clean and organized workspace takes time and effort—especially if we want to keep it that way. ____ According to recent statistics, the average office employee spends one and a half hours a day looking for things. That's an hour and a half that is wasted every day because of disorganization. Keeping things organized can give you more time each day. Having a clean workspace can have a number of additional surprising benefits. Let's look at some of those now.

____

    Untidiness can be a distraction that interferes with your thought process and prevents you from being as effective as you can be. When your workspace is clean and organized, you can spend more time focused on your tasks, without the unorganized chaos to attend to.

Attain More Success

    It's hard to be productive when you're disorganized. Organization can make it easier to concentrate, and allows you to get things done faster. Whether you're an employee or self­employed, organization is a crucial component for success. If clients see that you're well­ organized, they'll be more willing to trust you.____

Make a Better Impression

    In addition to making it easier to focus and work, having a clean workspace also helps to convey a professional image. Your workspace says more about you than you may think. When someone walks past your space, they instantly form an opinion about you based on what your space looks like.____ However, to the outsider, you may look overwhelmed and incapable of taking on extra projects.

Have a Happier Work Experience

    If you're surrounded by a clean environment you'll have space to think, will be able to get more done and will feel better working in that space.

Fortunately, keeping your space clean and organized is easier than you might think.____ You'll be amazed at the difference a clean workspace can make to your mindset and how much more you'll be able to accomplish during the day.

A. Improve Focus

B. Regain Tidiness

C. But the results are more than worth it

D. Maybe you feel productive with papers scattered around

E. It shows that you know what you're doing and that you are capable

F. Clearly being disorganized can have a negative effect on your performance

G. Try to get rid of or throw away everything that you don't need to maximize your productivity