根据所学常识判断下列说法是对(√)还是错(×)。

( ) 1. There are always three traffic lights: red, yellow and green.

( ) 2. It's not fast to go by plane.

( ) 3. If you go on foot, you don't need (需要) to know the traffic rules.

( ) 4. In the US, drivers drive on the right side of the road.

( ) 5. If the light is yellow, you can go.

患者，男，37岁，厌食、乏力、盗汗半年余，未予重视。近一周来咳嗽，伴明显胸闷、心悸就诊，入院查体：BP110/70mmHg，P75次／分，双肺呼吸音粗，未闻及啰音，心率75次／分，律齐，心音略低钝，未闻及杂音。病人血常规WBC10.0×10⁹/L，心电图示窦性心律。胸片示纵隔饱满。心脏彩超示心包积液。心包穿刺示淡红色液体。PPD实验强阳性。

为明确诊断应进一步做哪些检查（）

A.血常规

B.ECG

C.胸片

D.心脏彩超

E.心肌酶

F.血培养

G.PPD实验

H.肺功能测定

I.心包穿刺