Scientistsdoubtwhetherit’s________toregulateone’sbiologicalclockbydrinking.
A、feasibleA
A 可行的、可能且合理的 B 不可相信的、难以置信的 C 时髦的、时尚的 D 贵重的、宝贵的
________ he has many friends, he is often feeling lonely.
________hehasmanyfriends,heisoftenfeelinglonely.
Which of the folloing is NOT included in the fabled Five Mountains in China?
______ is recognized as the national flag-carrier.
________ in thought, he almost ran into the car in front of him.
