成污染的微纤维来自有些用人工材料制成的衣服，故C项符合语境。

　　2．答案与解析：E　根据文章结构可知，空处为该部分小标题。空后的段落主要讲的是微纤维对环境的影响，故E项符合语境。

　　3．答案与解析：F　结合空前一句中的"the waterways"和"in soil and agricultural lands"可知，研究人员认为微纤维可能扩散到水道、土壤和农田中，故F项"它也能在大气中移动"符合语境。

　　4．答案与解析：G　空前一句中的"sea animals, like oysters"与G项中的"fish and seafood"相呼应，故G项符合语境。

　　5．答案与解析：A　空后一句中的"A bag is being designed"正是A项中的"New technology"，故A项符合语境。

第二节. 语法填空

　　[2019·惠州市调研]Longjing tea, __1__ has topped the list of the ten most famous teas in China with its color, taste and shape, __2__ (name) after its production region - Longjing Village of West Lake. The good environment and water resources have contributed much to the __3__ (grow) of the tea, confirming the saying that "Longjing tea is the __4__ (good) among all of the teas in the world"．

Thanks __5__ the Qianlong Emperor of the Qing dynasty, the tea has earned a high reputation. The story went that the Qianlong Emperor visited a mountain during his Hangzhou travels, and he saw some ladies picking the tea at __6__ foot of the mountain. He was so interested in their movements that he decided to have a go himself.