根据首字母提示或汉语意思填空，使短文意思通顺，结构完整。
   When I was young, I studied hard all the time. But ____ u_________,my grades were low and I nearly lost ____ (信心) _________in myself .
  My father was worried about it .He took me to the garden .Pointing to two rows of trees ,he asked me ,"Do you know what trees they are ?" I watched ____ c_________ and answered, "They are poplars and gingkoes. " My father asked me to ____ c_________ poplars with gingkoes and find out the____ (不同) _________ between them .It’s very clear that poplars are much____ t_________ than the gingkoes.
   My father told me the two rows of trees ____ （种）_________ at the same time . While being planted , they were as tall as each other .With the same sunlight ,the same water and the same care, but why are the poplars so tall and the gingkoes are so ____ s_________?
I stood there without ____ s_________ a word . Then my father said ,"Boy ,you know ,the valuable things often grow up slowly."
I knew what my father meant by saying so .From then on, I studied harder and harder .And my grades ____ i_________ greatly .Three years later ,I succeeded in entering Beijing University .

阅读理解

A

　　　Many children enjoy riding roller coasters (过山车) because they like the exciting feelings a lot. They also like The Pirate Ship, Drop Tower, and Haunted House. But roller coasters are always the most popular for them in the park.

　　　The first modern steel roller coaster is the Matterhorn Bobsleds at Disneyland. It opened in 1959. The tallest roller coaster in the world is KingdaKa, in New Jersey, the USA. It is 456 feet (英尺) high. The world’s longest roller coaster is Steel Dragon 2000. It is in Japan. The fastest roller coaster is in Abu Dhabi. Its name is Formula Rossa, and it can reach 149 miles per hour.

　　　When we talk about roller coasters, safety (安全) is the most important thing we should think about. Modern roller coasters have built-in safety systems. Besides this, riders must do their best to follow all the safety rules so that we can ride roller coasters to get joy.