Scientists doubt wheth er it ’s ________ to regulate one ’s biological clock by drinking.
正确答案： A
本题解析：
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
The house was quiet in the night, ________ the occasional coughing from my throat.
________ in thought, he almost ran into the car in front of him.
By the middle of the 21st century, the vast majority of the world ’s population will be living in cities _______ in the country.
The government called out policemen to suppress the riot.
The missing boys were last seen ________ near the river.
The policeman came up to the lonely house with the door _______, _______ there for a while and then entered it.
_______ he goes, she will go, and she never cares _______ happens.
______ the new plan can be carried out will be discussed at the meeting tomorrow.