题目内容
阅读下面材料,在空白处填入适当的内容(1个单词)或括号中单词的正确形式。
Wild rice is not 1.___________ (actual) a member of the rice family, although it is a grain-producing grass. Native to North America, this grain can2._________ (find) growing wild in the ponds and lakes of Wisconsin, as well as in neighboring states. Like rice, wild rice grows in water, but it requires much 3.__________ (deep) water than rice does.
Wild rice is very difficult to harvest because its stalks(秆) are so crispy 4.___________ many types of equipment cannot be used. It takes patience and hand work 5.___________(harvest) wild rice. As a result, this grain is expensive and often difficult to get.
Like other grains, its chaff(谷壳) must be separated 6.___________ the grain. It is harvested green, and after being separated, it may be set out to dry to prevent it from7.___________(go) bad.
Wild rice is quite sensitive to changes in the environment. With the widespread use of dams(水坝) in the United States, many areas 8.___________ wild rice once grew have not been able to keep their former populations of the grain. This is 9. ___________ pity for people who enjoy the crop. Many native people hold the grain in high respect and they support the 10. ___________(produce) of this special rice.