4 . The practice of medicine is an art, not a trade, a calling, not a business; a calling in which your heart will be exercised equally with your head. —— William Osler (英译汉)

7 . 根据句意，选择单词或短语并以其适当形式填空。

drop by, pore over, a bunch of, bring…back to life, for good, pop up, take over, stay in business, in good hands, look up

1. In such an era of the information explosion, you can never know what news will ________.
2. I sent ________ flowers to the nurse to express my admiration for her in the fight against the virus.
3. The US President Joe Biden ________ the White House and became the 46th President of the United States on January 20, 2021.
4. In order to finish his paper, he had spent several hours in the library ________ those old documents.
5. To ________, they must offer lower prices or higher quality.
6. Don’t worry about the children. They will be ________ when you are out on business.
7. There was no need to treat me to lunch. I just ________ to see how you were going on.
8. It was reported that Russian tennis player Maria Sharapova left the tennis court ________.