题库 题库

【单选题】

How did Dr. Paul Seagle lengthen the lifetime of rats in his experiment?
  • A.By limiting the protein in their diet.

  • B.By cutting the calories in their diet

  • C.By resetting their clock of aging

  • D.By keeping their physical fitness

参考答案

查看答案

相关试题

单选题 What does the man want to be? 查看答案
单选题   查看答案
单选题   查看答案
单选题   查看答案
单选题 — Shall I come to pick you up right now?
— Sorry. I’m too busy to ________ for the moment.
查看答案
单选题 What can we infer from the news? 查看答案
单选题 The small mountain village ________ we spent our holiday two years ago lies in Hubei. 查看答案
单选题 What is probably the best title for the article? 查看答案
单选题 The author mentions the “sports terms” to show that __________. 查看答案
单选题 What does the speaker want most? 查看答案
单选题   查看答案
单选题   查看答案
单选题   查看答案
单选题 Which of the following word can best replace the underlined word “diminished”? 查看答案
单选题   查看答案
单选题   查看答案
单选题 — In which part of the play was ________ your brother appeared?
— In the last ten minutes.
查看答案
单选题 Which of the following will most probably be the first sentence of the fifth paragraph? 查看答案
单选题   查看答案
单选题   查看答案