冀教版初中英语八年级下册Unit 2 Lesson 7 Planting Trees

The dog went through the h in the wall.

"Top" is the opposite of "b".

Look at the black clouds. There will be a s soon.

Your hands are d, Tom. Go to wash them and have lunch.

This stone is so l and heavy that nobody can move it away.

Wei Min lives in a (north) town of Hebei, China.

It snowed and snow (cover) everything last night.

People eat the (root) of the carrots.

Look! The hall is (fill) of guests.

He covered the table ________ a cloth.

You ______ be very tired with the long drive. Let's stop to have a rest.

Water will ________ ice when the temperature is below zero.

________, who can help me carry the desk?

—I believe we will get good grades in the exam.

—________ We have prepared(准备) so well.

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We know that trees are useful in our everyday lives. They1us many things, such as wood, oxygen, rubber, medicine and many other things. They can 2 tell us a lot about our climate(气候). The following are the reasons.

If you 3 a tree, you can see that it has many rings(圆圈). Most trees grow one new ring 4year. Because of this reason, we know 5 a tree is. A tree over a hundred years old means that it has more than a hundred 6. When the climate is dry or very cold, the trees do not grow very much and their rings are usually7. When it is wet and warm, the rings are much thicker. If the rings are suddenly very thin or suddenly very thick, this means that the climate changes 8. If we look at the rings on the tree, we can learn about the 9 of a hundred years ago. We can see 10our climate is changing today.