What is the passage mainly about？

(单选题)51.（ ） (单选题)—Please find out the person in the video and I will be grate (单选题)No sooner ______ than the sons and daughters started to quar (单选题)In the 19th century, neither Japan nor Germany ______ equiva (单选题)The dollar, ______ as a global safe haven, invites investmen (单选题)Tom’s rude behavior is ______ annoy everyone in his class. (单选题)______ national treasure of China, which are protected by Ch (单选题)The ______ in Jim’s character has hampered his progress. (单选题)You ______ her advice! Otherwise you wouldn’t lose the offer (单选题)My brother has a ______ look on his face when watches the __