【简答题】函数 y=2tan( π 3 x- π 4 ) 的定义域是______.
【单选题】已知函数y=f(log 2 x)的定义域为[1,4],则函数y=f(2sinx-1)的定义域是( )
A.
(2kπ- 7π 6 ,2kπ+ π 6 ) k∈Z
B.
[2kπ+ π 6 ,2kπ+ 5π 6 ] k∈Z
C.
[2kπ- 2π 3 ,2kπ+ π 3 ] k∈Z
D.
(2kπ- π 6 ,2kπ+ π 6 ) k∈Z
【简答题】Fill in each blank with the right preposition.填入适当的介词 The boys felt sad as they lost ________ the girls in the talk show.
【简答题】The boys felt sad as they lost ____the girls in the talk show. (填介词)
【单选题】文人画家喜爱绘制的 “四君子”题材指 梅、兰、竹 、 ( ) 。
【判断题】Kinship terms in Chinese and English are very similar.
【单选题】(126—128题共用题干) 患儿,男,5岁。体重12kg,身高98cm,经常烦躁不安,皮肤干燥苍白,腹部皮下脂肪3 cm,肌肉松弛 126.护士判断该患儿是
【单选题】若函数f(x)的定义域是[-1,0],则函数f(sinx)的定义域是( )