1. (2021·杨浦模拟) Choose the best answer. (根据以下内容，选择最恰当的答案。)

A Fun Plant Experiment to Try at Homel! Without water, plants would die. Do you know how water gets from the roots of a plant to the rest of the plant? The water travels through tiny tubes that from pathways to all parts of the plant. This is similar to how blood flows in our bodies. And here is an experiment to prove it. Materials ●a celery stick ●a sharp knife ●a glass of water ●some red food colour ______ 1）Put a few drops of the red food colour in the glass of water. 2）Cut the bottom of the celery stick and place the celery in the water. 3）Leave the celery stick in the glass of water for several hours. 4）Remove the celery stick and cut it into pieces horizontally, that is, across the stem（茎）. Observation Red food colour is present in all cross sections from the bottom of the celery stick right up to the leaves. Explanation The water, along with the red food colour, has been transported up the celery stick through the tiny tubes in it. The experiment, therefore, proves that tiny tubes in plants enable water to reach all parts of the plant. The red food colour shows where the water has travelled to in the celery stick.

1. （1） The type of the text is ________.

   A . a review B . an advertisement C . a menu D . an instruction
3. （2） What best fits the blank?

   A . Form B . Schedule C . Steps D . Tips
5. （3） What do you observe when the celery stick is cut into cross sections?

   A . The inside of the celery stick is empty. B . The water in the glass has disappeared. C . The celery stick has become bigger. D . All the cross sections have become red.
7. （4） "Blood" in the bodies is compared to "________" in the plant.

   A . water B . the leaves C . the stem D . the root
9. （5） In the experiment, why is red food colour added to the water?

   A . It makes the celery stick look nicer. B . The water's path in a plant can be seen. C . The plant needs food colour to survive. D . It helps the plant to transport the water.
11. （6） The experiment aims to show ________.

    A . how to colour a stick of celery B . that plants would die without water C . how water travels through a plant D . that science experiments are fun to do