修改意見:
One of the themes that are common to the Chinese people is about the value of the plants to china.
(The issue of the value of the plants to china is common to the Chinese.)
On the question of whether it is better to consider wheat the most important plants or to regard other kinds of plants, such as corn, bean, lettuce, etc., as the most valuable plants,some people assert that wheat is most important to our country, while other people believe that the other kind of plants is. 【這個句子太長不清晰】
（As to whether it is better to consider wheat the most important plant comparing with other plants, such as corn, bean and lettuce, different people have different answers. Some assert that wheat is most important to our country, while others do not believe so.）
As a matter of fact, the issue of what is the most valuable plant to china is a complex issue. On balance, however, I tend to agree that the wheat（同下皆改）, which is cultivated all over our country, is the most valuable to our country. My view can be greatly substantiated by the following discussions.
The main reason for my view is that wheat is beneficial to Chinese people. It provides us (with) the necessary food for our normal lives. We eat it from breakfast to dinner(supper【supper 和 breakfast 對應(yīng)】), from desert to cookie（dinner 【正餐 dinner 和 甜點 desert 對應(yīng)】）. There are a lot of food made of wheat, for example, the noodle, the dumpling, （這個逗號不需要）and the bun, which are all common food in china, are all made of wheat. Besides, wheat can be cultivated in most lands（land 【一般不可數(shù)，表示國家可以是復數(shù)；這句話說得太假了吧，中國的地理沒有這么優(yōu)越的條件吧】） in our country.
Unlike the rice, which only can be planted in southeast and south of china, wheat can survive all（【all 夸張了點 many 就夠說明問題了】） kinds of the environment, so that even the most severe areas, such as the Sinkiang province can cultivate wheat and supply the food to its people.（這句話冗長，且不明晰）
（Unlike rice, which can only be planted in the southeast and south of china, wheat can survive many kinds of environment, though it is planted in the most severe areas. For instance, people cultivate and harvest wheat in Xinjiang province where the environment is not comfortable for other plants to grow.）
Last but not least, wheat plays a pivotal role in Chinese export trade, because wheat is one of the most important items to be exported to other countries.（【據(jù)說中國是世界小麥進口大國；不過這些都不要緊，批作文的，不像我這樣是學外貿(mào)的】）
Apart from its benefit to Chinese people, another reason for my view is that wheat is good for the animal too, especially for domestic animals in our country. For instance, Cow (Cows 【Cow是可數(shù)名詞，泛指用a cow 或者cows】)eats（eat） the leaves and stems of wheat as its food. Even more, people will use the stems and leaves of wheat to fill domestic animal’s barns. It means wheat is not only useful to Chinese people, but also it is（這里你想it 指代 wheat，但是由于 it means 中it 做邏輯主語，造成指代錯誤；not only 和 but also 要結(jié)構(gòu)相當，后接形容詞短語就行了）beneficial to Chinese cattle.
Admittedly, it is true that other plants, such as corn, bean, lettuce, etc., are important to our country too, after all （because）they also can provide our food, vegetables, or flowers to us.
However, considered that China is still a developing country and to provide enough food to our people is the overwhelmingly important issue to our country, even more, considered that wheat is the most widely cultivated plant to provide our food, wheat is most important plants to our country.
（However，considering the food supplies and the ample production of wheat， we can easily come to the conclusion that wheat in most important plants to china, the developing country.）
In sum, although other plants may have some kinds of importance to our country,
(In sum, although we cannot ignore the importance of other plants from some certain aspects,) in the light of the above discussion, it can be safely said that wheat plays the most pivotal role to our country, comparing with other kinds of plants. Moreover, our country should plant more wheat all over the country, in order to ultimately solve our food problem for either people or domestic animals.
第一篇能寫到這水平很厲害了,結(jié)構(gòu)不錯，句子還要再斟酌，不要一味的求長；論點還要好好想想，磨刀不誤砍柴功～