信令设备的主要功能是接收和发送（）。A.数据 B.脉冲 C.语音信号 D.信令

阅读理解。

     Do you enjoy reading? Here readers of your age from all over the United States recommend (推荐) great

books for you to read:

     My favorite book is Don't Die, My Love by Lurlene McDaniel. I love all her books, but this was the first

one I read and I have to say, it is by far my favorite. It doesn't end like other books, and I cried while reading.

     I think Nancy Drew is great! Nancy is a detective (侦探) who has many fantastic ideas! I love it because

it's a book from when my grandma was my age, and I can share the fun with her!

     I highly recommend Skinny Bones by Barbara Park. It is funny so please add it on your book list. You

don't want to miss out funny stories!

     I would suggest ______ by Judy Blume. It is based on real things that happened to Judy Blume. It is about

a girl, Alice, who meets some girls at a new state. They become friends, make a club and meet once a week.

They stop after two weeks because they all like a boy in their class and put him as number one. I think every

girl should read this because it is about our growing up.

      I read a book called Neela: Victory Song and it was so good I read it twice! It takes place in India in 1936

and this 12-year-old girl named Neela tries to save her father! It has lots of history in it! I also learned a lot

about different cultures! The author's name is Chitra Banerjee Divakaruni.

1. According to the reader, Skinny Bones can be described as a ________ story.

A. sad

B. history

C. funny

D. detective

2. From which book can we learn different cultures?

A. Skinny Bones.

B. Nancy Drew.

C. Don't Die, My Love.

D. Neela: Victory Song.

3. The best name of the 4th book is ________.

A. My Secret

B. Growing Trouble

C. Three Friends

D. Alice Learns a Lesson

4. Which is TRUE about Nancy Drew?

A. Both the reader and the reader's grandma love this book.

B. It's based on real things that happened to the author.

C. It's about a12-year-old girl who tries to save her father.

D. It doesn't have a common ending like other books.

供电系统的供电状态是指用户随时可从供电系统获得所需电能的状态。

消费者在挑选大多数选购类产品(如服装)时进行的是( )的决策过程。

A．习惯型
B．复杂型
C．有限型
D．无限型

瓷嵌体与金属嵌体相比，最大的优点是

A．机械性能较好，耐磨

B．物理性能稳定

C．制作工艺简单

D．色泽协调美观

E．边缘性较短

喷雾消毒法中不正确的是（）。

A、喷雾前必须将室内的食品转移

B、根据物品特性选择合适消毒剂

C、严格掌握消毒剂的有效浓度、消毒时间和方法

D、在有人情况下，喷洒前应将门窗关闭，到规定时间后再开窗通风