下列关于狂犬病病理变化的叙述,不正确的是()。
A.急性弥漫性脑脊髓炎
B.脑实质和脊髓充血
C.脑实质和脊髓微小出血灶
D.脑实质和脊髓水肿
E.脑膜病变
参考答案:E
Jill ______ listen to classical music but now she likes listening to pop music. [ ]
A. used to
B. didn't use to
C. was used
D. wasn't used
某一投资组合由两种证券组成,证券甲的预期收益率为8%,权重为0.3,证券乙的预期收益率为6%,权重为0.7,则该投资组合的收益率为()。
A.6.6%
B.2.4%
C.3.2%
D.4.2%