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Thomas Adams, an American inventor, is the father of modern bubble(泡泡) gum．During the 1870s, Adams discovered a new way to make chewing gum by accident, while he was trying to find a use for chicle(糖膠樹腳)．Mr. Adams wanted to make rubber(橡膠) from chicle．

Mr. Adams worked for a long time trying to make rubber from chicle．His oldest son also helped him sometimes. But they never discovered a way to make it work. One day, Thomas Adams was in a store when he heard a young girl ask for some chewing gum．Adams and his son had been chewing chicle while they were working on the rubber, so he decided to give up trying to make rubber from the chicle and make gum instead．At that time, chewing gum was made form spruces sap(云杉樹液) ．This chewing gum didn’t taste very good．Admas thought chewing gum from chicle tasted better．He and his son wrapped small pieces of chicle in colorful paper and sold it．People everywhere began chewing his gum at once．

       Mr. Adam’s gum could make bubbles, but the bubbles were very sticky(膠粘的)．Until 1928 Walter Diemer found a way to improve chewing gum by making bubbles that were not sticky．

1．Where as Thomas Adams from?

A．The United States．                                    B．The United Kingdom．

C．Australia．                                                 D．Spain．

2．The word “wrapped” here in Chinese means “        ”．

A．掩飾                    B．遮蔽                       C．包裹                      D．覆蓋

3．What did Thomas Adams give up trying to make?

A．A new kind of paper．                             B．A new kind of rubber．

C．A new kind of chicle．                                D．A new kind of drink．

4．Which of the sentence is NOT TRUE?

A．Mr. Adams thought spruce gum didn’t taste as good as chicle gum．

B．Mr. Adams never found a way to make rubber from chilce．

C．Mr. Adams is the father of modern bubble gum．

D．Mr. Adams was the first person to sell gum．

5．What was the difference between Mr. Diemer’s gum and Mr. Adams’s gum?

A．Mr. Diemet’s gum could make bubbles．

B．Mr. Diemer’s gum was less sticky．

C．Mr. Diemer’s gum was made from tree sap．

D．Mr. Diemer’s gum was sold in colorful paper．