【简答题】(1) 的定义域是? (2)设 ,则y=f(x 2 )+f(e x )的定义域是? (3)设函数 的定义域是[-4,-π]∪[0,π],则g(x)的表达式为?
【单选题】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0.3cm,肌肉松弛。护士判断该患儿是
【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)
【判断题】Kinship terms in Chinese and English are very similar.
【多选题】Chinese kinship terms can be used to address .
【单选题】The boys felt sad as they lost ________ the girls in the talk show.