以下________项属于消费者再网上商店进行购物的操作。
A．浏览产品
B．选购产品
C．订购产品
D．信息发布
参考答案：A,B,C
用括号内所给动词的适当形式填空。
1. Let's have a dictation (听写). ________ (take) out your exercise books.
2. After eating, I help my mom ________ (do)the dishes.
3. My brother often asks me ________ (sweep) the floor.
4. The computer programmer is going _______ (work) on a new program.
5. The girl is old enough _______ (make) her bed.
眼的屈光系统不包括（）
A.房水
B.虹膜
C.玻璃体
D.晶状体
E.角膜
