可见肝脏进行性肿大，且质地坚硬的疾病是（）
A.脂肪肝
B.肝脓肿
C.肝炎
D.血吸虫病
E.肝癌
参考答案：E
设锐角△ABC中，2sin2A-cos2A=2．
（1）求∠A的大小；
（2）求（cosB+sinB）2+sin2C的取值范围．
—This weekend we’re going to the Dancing Club. ______
—Yes, I’d like to.
A．Can I help you?
B．Would you like to join us?
C．What are you going to do?
D．What can I do for you?
