18.下列各项中属于人体第一道防线的是 A.白细胞的吞噬作用b.免疫器官c.皮肤的屏障作用d.溶菌酶杀菌——青夏教育精英家教�—— Template




You need a modern browser try chrome, to view this.

Background image: Hide Show

View Larger Image Image Credit: 1010jiajiao.com






Try and sketch some of theseCheeseburger, Columbine, Hot water bottle, Bell, Iron, Square, Birdhouse, Tsunami, Mascara, Triplets, view more ideas


please wait, the page is loading...

More Sketches

Take a peek at some of the sketches created by our users, are you a sketchite?

anonymous
anonymous
sketch #4974 Eminem by Juan Garcia


anonymous
anonymous
sketch #1711


Saifa Mahmud
sketch #1671


anonymous
anonymous
sketch #5117


anonymous
anonymous
sketch #4306 The burning watermelon!


sketchmaster
sketch #2608 Beauty and the Beast by sketchmaster


anonymous
anonymous
sketch #5101


anonymous
anonymous
sketch #970 Depression


anonymous
anonymous
sketch #4887 Jessica Rabbit by Garima Taneja


anonymous
anonymous
sketch #2977 Spongebob Germaine Hoens


anonymous
anonymous
sketch #1041 strawberries


anonymous
anonymous
sketch #1219


sketchmaster
sketch #2486 Face by sketchmaster


anonymous
anonymous
sketch #3589 Cheshire Cat by Helen Besley


anonymous
anonymous
sketch #3337 Uryuu Minene by Michael Angcay


anonymous
anonymous
sketch #4942 Woman by Abbie Hayman


anonymous
anonymous
sketch #3643


anonymous
anonymous
sketch #4649


anonymous
anonymous
sketch #3165


Милен Тревата
sketch #2771 Naruto by Милен Тревата


anonymous
anonymous
sketch #3760 PSY by Juvenilia Alexandrino


anonymous
anonymous
sketch #5236 Edward Scissorhands by Ronin Ronin


anonymous
anonymous
sketch #5095 Lion by Frederic Knauer


anonymous
anonymous
sketch #4520


anonymous
anonymous
sketch #2070


anonymous
anonymous
sketch #5306 Katarina by Mirnes Sinanovic


anonymous
anonymous
sketch #3063


anonymous
anonymous
sketch #4661 Woodpecker by Hsien-Ying Hsieh


anonymous
anonymous
sketch #4876 Luffy by Nycole Prietsch


anonymous
anonymous
sketch #4749 Random Girl by Adellachamp Stand

tomski18.下列各项中属于人体第一道防线的是 a.白细胞的吞噬作用b.免疫器官c.皮肤的屏障作用d.溶菌酶杀菌——青夏教育精英家教�—— coloring