题目

完形填空 Here is a picture.It is a picture of my __1__.This is my __2__.My quilt is on it.Two baseballs are under it.They are white __3__.Look at my desk.A __4__ is on it.I like computer games.A __5_ is on it，too.It's 9：00.My __6_ is in my schoolbag and two _7__ are in it.My books are __8__ the floor.My keys are in the drawer.__9__ is my ID card？Do you _10__？Oh，it's in my English book. I like my room.It is nice. 1．A.room           B．school                    C．family                   D．tape 2．A.watch          �CuI是一种不溶于水的白色固体，它可以由反应：2Cu2++4I-═2CuI↓+I2而得到．现以石墨为阴极，以Cu为阳极电解KI溶液，通电前向电解液中加入少量酚酞和淀粉溶液．电解开始不久，阴极区溶液呈红色，而阳极区溶液呈蓝色．对阳极区溶液呈蓝色的正确解释是（　　） A、2I--2e-═I2  碘遇淀粉变蓝B、Cu-2e-═Cu2+  Cu2+ 显蓝色C、2Cu+4I--4e-═2CuI↓+I2   碘遇淀粉变蓝D、4OH--4e-═2H2O+O2   O2将I-氧化为I2，碘遇淀粉变蓝