How old is chewing gum(口香糖)? Scientists think the first chewing gum wasmade from tree sap(液). In South America, the Maya people chewed on a tree sapcalled “chicle". Native American people chewed sap from spruce trees. Later, earlyAmerican picked up the tree gum chewing habit.In 1848...
Experts have proven that chewing gum can also increase the flow and distribution of saliva. So chewing a piece of gum after a meal, so that the secretion of saliva greatly increased, is not only conducive to digestion but also can help remove food debris in the mouth is not easy to clean...
How do you like chewing gum(嚼口香糖)? It may be one of 1.___(children) most favourite sweets. But do you know how it was invented and who invented it?The popular sweet was invented by an American scientist 2.___(name) Thomas Adams. And he invented it by mistake. It was 1869. ...
Do you like chewing gum( 口香糖)?How many students chew gum in your class every day? 1 Many people like gum nowadays, especially teens. However, some of them have a bad habit-their often throw their used gum onto the floor. 2 But do you know that the drivers in Jinan could find abo...
Now,chewing gum is 44 among both children and adults.However, few people know this was all started by anAmerican scientist from a 4536.A.HoweverB. SuddenlyC.LuckilyD. Happiy37.A. himB.herC.themD.you38.A.aboutB.withC.forD. without39.A.borrowB.findC.carryD.create40.A.interestedB. ...
考查名词。根据前文 “Chewing gum”可知, 应该是糖果,故选A 9.B。 考查名词。 根据后文 “chewing gum.” 可知应 该是口香糖是这种产品的名字,故选B。 10.C。 考查动词。 根据后文 “Now, chewing gum is popular among many people”可知, 应该是被开 发出来,故选C。 反馈 收藏 ...
Chewing gum(口香糖)may be one of your favorite sweets.But do you know how it was invented?It was invented by American scientist Thomas Adams.(1) A ,he invented it totally by mistake.It was 1869.Earlier that year,one of Adams friends showed(2) A an interesting kind of sap(树汁).The ...
Then it is broken into little sticks. Now we have the chewing gum, as you know it. Before listening to this text, ask the students who chews gum, where they chew it, why they chew it and about their favourite chewing gum / which flavour they prefer. This will prepare them for the ...
Laterin 1869, he opened a factory to produce this deliciousIn 1888, Adams gave ato the invention: "chewing gum." T he sweet can be gotfrom selling machines at underground stationsall over New York City. Over the years, new kinds have been. Now, chewing gum is popular among many people...
Now, chewing gum is popular among many people. However, few people know this was all started by an American scientist from a mistake.1.A.eatenB.pollutedC.soldD.invented2.A.in publicB.by mistakeC.in personD.by hand3.A.ancientB.singleC.famousD.sick4.A.productsB.recordsC.cropsD.fruits...