People like reading books in________.

A. library
B. bank
C. hospital

Thailand is_______ Southeast Asia.

A. on the heart of
B. in the heart of
C. next to

Don't forget ______ your umbrella when you go out.

A. to take
B. taking
C. took

There are many _______ buildings in Beijing

A. historical
B. history
C. historic

There is also the impressive Riverside Park near Columbia University. The undeline word means_____.

A. boring
B. amazing
C. funny

翻译句子：In the afternoon, you'll have a chance to relax or see the sights.

用于模拟信号的耦合转换，首先要求光电耦合器件具有良好的（）特性。

光电耦合器是以光为媒介传输电信号的一种（）-光-（）转换器件。

光电耦合器件由（）和（）两部分组成

光电耦合具有工艺复杂，成本高，体积大，应用不便等特点。

A. 对
B. 错