雄黄内服，成人每次用量是（）
A.0.05～0.1g
B.0.3～0.6g
C.0.9～1.5g
D.1.5～5g
E.5～10g
参考答案：A
Your cousin is said ________ a new computer program recently, but do you know when he will finish it?
A．to design
B．designing
C．to have been designing
D．to have designed
( )是第一生产力。
A．科学B．技术C．高技术D．科学技术
