下列哪种疾病与激素分泌异常无关( )
A:侏儒症
B:巨人症
C:夜盲症
D:糖尿病
The news came, as expected, __________ my cousin was chosen to be a foreign aid doctor to go to Africa where people are suffering a lot from aids.
7+( )=14。
我国西部大开发的战略中,“保护天然林”和“退耕还林(草)”是两项重要内容,采取这两项措施的首要目标是( )
如图,以O为位似中心将四边形ABCD放大后得到四边形A′B′C′D′,若OA=4,OA′=8,则四边形ABCD和四边形A′B′C′D′的周长的比为 ____.