单选题 Researchers conducted a set of psychological tests to determine the negative consequences of a sleep ____.

单选题 In addition to a sense of sight, bees also have an unusual sense of smell, so they can ____ more than 10 similar flower odors.

单选题 China's series of ____ measures have proved to be effective for a steady economic recovery despite difficulties.

单选题 Some parents try to help solve the problems that their sons and daughters have in ____ to their college life.

单选题 According to the media, China's wind power capacity has ____ the previous level considerably.

单选题 The lawyer proclaimed that they couldn't jump to conclusions because acceptable conclusions must be ____ supported by evidence.

单选题 To help the employees become more communicative, the company offered several workshops to those who were not ____ in social interactions.

单选题 Moving forward even in the face of great difficulties has become the most important ____ in my life and career.

单选题 The guest speaker decided to ____ his speech in order to leave enough time for his audience to ask questions.