问题
单项选择题
Ⅲ度营养不良体重减轻多少
A．20%以上
B．25%以上
C．30%以上
D．35%以上
E．40%以上
答案
参考答案：E
搜题请搜索小程序“爱下问搜题”
Ⅲ度营养不良体重减轻多少
A．20%以上
B．25%以上
C．30%以上
D．35%以上
E．40%以上
参考答案：E
| 完形填空。 | ||||
| We know that trees are useful in our everyday life. They 1 us many things, such as wood, oxygen, rubber, medicines and many other things. They can 2 tell us a lot about our climate. The following are the reasons. If you 3 a tree, you can see that it has many rings (年轮). Most trees grow one new ring 4 year. 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 usually 7 . 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 8 changed suddenly. If we look at the rings of this tree, we can 9 about the climate for a hundred years. We can see 10 our climate is changing today. | ||||
|