闭经病人作垂体兴奋试验(+),表示
A.雌激素水平不足B.有排卵C.Truner综合征D.垂体性闭经E.丘脑下部性闭经
参考答案:E
已知数 * * ,7,11,…,139与2,9,16,…,142,则它们所有公共项的个数为( )
A.4
B.5
C.6
D.7
_____there are many different types of food, some animals spend their lives eating only one type.
A.Since
B.As
C.Despite
D.While