题目

氧气在一定条件下变成淡蓝色液体，此过程中发生变化的是（ ） A.氧分子的体积B.构成氧分子的原子 C.氧气的化学性质D.氧分子的间隔 答案：D任务型阅读维生素对人体很重要，大家了解他们吗？请仔细阅读第1-5题中的五种维生素的介绍和A至F材料说明，匹配需要补充该种维生素的人。【1】Vitamin AWhat can high-vitamin A foods do for you?be great for night visionhelp you see in colorhelp your grow properly and aids in healthy skin﹡ vitamin A in carrots helps you see at night【2】The B vitaminsWhat can the B vitamins do for you?help make energy（能量） and set it freehelp make red blood cells（细胞） which carry oxygen(氧气) throughout your body﹡ The B vitamins in leafy green vegetables help your body make protein(蛋白质)and energy.【3】Vitamin CWhat can vitamin C do for you?keep body tissues(组织) in good shapehelp you heal when you get hurthelp your body resist infection﹡ Vitamin C in oranges helps yourself heal if you get a cut【4】Vitamin DWhat can vitamin D do for you?help keep your bones（骨头） strong and healthyhelp keep your teeth strong and healthyhelp your body absorb吸收） the amount of calcium(钙)p>﹡ Vitamin D in milk helps your bone and teeth.【5】Vitamin EWhat can vitamin E do for you?protect your skin from ultraviolet(紫外线) lightprotect your lungs from becoming damaged by polluted airhelp make red blood cells﹡ Sunflowers seeds are the richest in Vitamin EA. Emily often feels tired and seems to be lack of energy.B. Jeff spent his summer vacation on the beach and got serious sunburnt.C. Kate has poor eyesight and she can’t see clearly at night.D. Tony sometimes feels pains in his bones and he has loose teeth.E. Linda feel nervous before the new people.F. Luke is so careless that he often gets hurt. And it takes a long time for his wound to heal.