阅读理解You can find out mandy things about a tree by studying i

阅读理解
You can find out mandy things about a tree by studying its rings.
Each year,from top to bottom,a tree grows a new layer of wood around itself.If you cut across a tree trunk or branch,you would see that these layers of wook look like rings.By counting tree rings,you can tell how old the tree is.If you count ten tings,for example,the tree is ten years old.
Looking at the picture shown above,you can see that each tree ring has a dark part and a light part.The light wood grows in the sping,the dark part in the summer.Look,also,that some rings in the picture are wide and others are narrow.Trees grow wide rings during the years when they get a lot of water and sunlight.By examining tree rings,you can tell what the weather may have been like many years ago.
Giant sequoia trees,such as the one in the photo above,grow in north-western California.Some of these sequoias have more than 3000 tree rings.Can you guess how old such a tree would be?
( )1.According to the story,a tree ring is a __________.
A.branch
B.layer of wood
C.giant sequoia
D.year old
( )2.A tree ring is a added to a tree __________.
A.every ten years
B.every year
C.every 3000 years
D.every two years
( )3.The light part of a tree ring __________.
A.gets dark in the winter
B.tells the tree's age
C.grows in the sping
D.gets light every year
( )4.From the story,you can tell that __________.
A.all tree rings look the same
B.most trees do not grow tree rings
C.tree rings add to the tree's width
D.most of the trees grow rings