阅读理解

B

       Do you remember when your grandma told you the story of Snow White? Ah, the happy days of childhood!

       But did you know that Snow White comes from Germany? It's just one story from the 209 in Grimm's Fairy Tales (格林童话). The Grimm brothers started to collect fairy tales in 1806. Their first book came out in 1812.

       Why are German fairy tales so interesting? Maybe it's because they come from a great place famous for its stories – the Black Forest.

       The Black Forest is in the southwest of Germany. It's a very large and beautiful forest of the country. It's famous for its trees and lovely views (风景). There are valleys (峡谷) and waterfalls there. It's a good place to start a story.

       Don't forget to bring something back if you visit. People there are good at making clocks, musical instruments (乐器) and watches.

有一类植物，结构简单，没有根、茎、叶的分化，诗人曾用“日出江山红似火，春来江水绿如蓝”，来形容它是____植物。

蒸馏水（清水）和生理盐水是生物实验中常用的两种试剂，以下关于它们的作用，错误的是（　　）