（）通常分为适合成人的内容.儿童必须在父母指导下观看的内容.适_爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题单项选择题

（）通常分为适合成人的内容.儿童必须在父母指导下观看的内容.适合13岁儿童观看的内容.所有观众观看的内容等若干级别。

A.以年龄为基础的分级

B.以内容为基础的分级

C.以性别为基础的分级

D.以国籍为基础的分级

答案

参考答案：A

填空题

选词填空从方框中选择合适的单词填入下列句子中。

Turn, cut, peel, mix, drink, roll, eat,
pour, have, boil, add, take , put, make

1. How long does it _______ to get to school?
2. I can't come. I _______ a really busy day .
3. The Greens like to _______ sandwiches with lettuce.
4. Let's _______ some banana smoothie .
5. _______ some more salt to the popcorn, please.
6. You have to _______ the banana before eating it.
7. Can you help me _______ up these tomatoes?
8. Don't _______ waste water into the river.
9. Next you need to _______ all these things into the blender.
10. Finally, _______ on the blender and you'll get some fruit salad.

问答题简答题

说明变压器差动保护的接线图BZ4-9是否正确,并指出不正确的地方。