7.8与6.2的差去乘它们的和,积是多少?
(7.8-6.2)×(7.8+6.2),
=1.6×14,
=22.4;
答:积是22.4.
下列哪项不是单纯右心功能不全的表现()
A.双肺底湿性啰音
B.肝脏肿大和压痛
C.水肿
D.颈静脉充盈或怒张
E.胸腔积液和腹水
If I _____ you, I _____ wear a shirt. [ ]
A. am; will
B. was; will
C. were; would
D. am; would