1.It is a tall tale that terrifies most young children.Swallow a piece of chewing gum and it will remain in your body for seven years before it is digested.Or so they say.An even worse tale is that swallowed gum can wrap itself around your heart.
But what does happen if you should accidentally eat a stick of gum?Chewing gum is made out of gum base,sweeteners,coloring and flavoring.The gum base is pretty indigestible-it is a mixture of different ingredients(成分)that our body can't use.
Most of the time,your stomach really cannot break down the gum the way it would break down other foods.However,your digestive system has another way to deal with things you swallow.After all,we eat lots of things that we are unable to fully digest.They keep moving along until they make it all the way through the gut(腸子)and come out at the other end one to two days later.
The saliva(唾液)in our mouths will make an attempt at digesting chewing gum as soon as we put it in our mouths.It might get through the shell but many of gum's base ingredients are indigestible.It's then down to our stomach muscles-which contract and relax,much like the way an earthworm moves-to slowly force the things that we swallow through our systems.
Swallowing a huge piece of gum or swallowing many small pieces of gum in a short time can cause a blockage within the digestive system,most often in children,who have a thinner digestive tube than adults-but this is extremely rare.
28.A child might feel terrified after swallowing chewing gum mainly becauseC.
A.their heart will be wrapped by chewing gum
B.chewing gum will stay in their body for many years
C.they believe the tall tales about chewing gum
D.chewing gum is indigestible for children
29.What happens to the food that can't be fully broken down?B
A.It remains in our digestive system forever
B.It will be eventually moved out of our body
C.It will fight against the power of the gut
D.It will stick to the gut for one or two days
30.The word"It"(in the 4th paragraph) refers to"B".
A.the attempt
B.the saliva
C.the shell
D.the gum base
31.What would be the best title for text?A
A.Does swallowing chewing gum matter?
B.Can chewing gum be swallowed by kids?
C.How does our digestive system work?
D.Why swallowing chewing gum frightens kids?
分析 人們傳言吞食的口香糖要花七八年才能消化,甚至還有傳言說口香糖在在你的肚子里纏繞.然而,事實(shí)的真相是對于那些不能被消化的食物,人體的消化系統(tǒng)會將它們排除體外.
解答 28-31 CBBA
28.C 細(xì)節(jié)理解題.根據(jù)文章第一段第一句"It is a tall tale that terrifies most young children."以及對第二、三句話的理解可知,答案C符合文義.B、D兩項(xiàng)只是分別說明了tall tale的內(nèi)容,故排除.
29.B 細(xì)節(jié)理解題.根據(jù)文章第三段最后兩句"After all,we eat lots of things that we are unable to fully digest.They keep moving…come out at the other end one or two days later."可知,我們吃的很多東西都不能被完全消化,一兩天之后它們就會排出體內(nèi),故答案B符合文義.
30.B 指代判斷題.根據(jù)對文章第四段前句The saliva(唾液)in our mouths will make an attempt at digesting chewing gum as soon as we put it in our mouths可知,我們嘴里的唾液會嘗試分解我們放在嘴里的東西,所以此處的It是指第一句中的The saliva(唾液),故答案B符合文義.
31.A 標(biāo)題概括題.文章第一段由一個使小孩子害怕的說法導(dǎo)入話題,下文是對口香糖進(jìn)入肚子后會怎樣的一個科學(xué)解釋,由此可推知,選項(xiàng)A"誤食口香糖要緊嗎"最適合作為文章標(biāo)題.
點(diǎn)評 閱讀理解題測試考生在閱讀基礎(chǔ)上的邏輯推理能力,要求考生根據(jù)文章所述事件的邏輯關(guān)系,對未說明的趨勢或結(jié)局作出合理的推斷;或根據(jù)作者所闡述的觀點(diǎn)理論,對文章未涉及的現(xiàn)象、事例給以解釋.考生首先要仔細(xì)閱讀短文,完整了解信息,準(zhǔn)確把握作者觀點(diǎn).