Healthy trees are important to us all. Trees provide shade, beauty, and homes for wildlife. Trees give us products like paper and wood. Trees can give us all these only if they are healthy. They must be well cared for to remain healthy.
Your trees’ trouble may be you yourself. People spend much time and money to plant and maintain trees. Trees improve the looks of homes, parks, business, and public buildings. Yet, people who love trees the most may be the ones who cause them injury. Of course, they do not do this on purpose. They are most likely not aware of the kinds of things that injure trees. There are many people-caused tree injuries. You should become aware of them and avoid them. Learn the things that can help to keep your trees healthy.
Healthy trees are beautiful. They make our world a pleasant place to live ill. Unhealthy trees are not as beautiful. They make our world less pleasant. Healthy trees help to cool and clean the air. They can even deade
A. beautiful
B. old
C. healthy
D. young
| Nutritional statements that depend on
observation or anecdote should be given serious consideration, but consideration
should also be given to the physical and psychological quirks of the observer.
The significance attached to an experimental conclusion depends, in part, on the
scientific credentials of the experimentalist; similarly, the significance of
selected observations depends, again in part, on the preconceptions of the
observer. Regimes that are proposed by people who do not look as if they enjoyed their food, and who do not themselves have a well-fed air, may not be ideal for normal people. Graham Lusk, who combined expert knowledge with a normal appreciation of good food, describes how he and Chittenden, who advocated a low-protein diet, spent some weeks in Britain eating the rations of the 1914-1918 war and then got more ample rations on A. (A) the strange low-protein diet B. (B) the unusual character of the observer C. (C) the unexpected meals provided by the observer D. (D) the ample rations of the 1914 - 1918 war [简答题]Part 1trees/forest
[单项选择]Future agriculture should depend on high technology______traditional methods.
A. except B. as to C. besides D. otherwise [填空题]The bacteria depend on worms for hydrogen sulfide in the symbiotic relationship.
[填空题]Obtaining money to improve the lasers will depend on tests in real storms.
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