函数f(x)=sin(ωx+φ)cos(ωx+φ)(ω＞0)以2为最小正周期，且在x=2处取得最大值，则φ的一个值是( )。
参考答案：A
解析： [*]
下 * * 种肝炎病毒中哪一个为DNA病毒（）
A.HDV
B.HCV
C.HBV
D.HAV
E.HEV
Every day the boy, together with his classmates,_______to go to the sports ground and______football, _________themselves.
A．are noticed; play; enjoying
B．is noticed; plays; enjoying
C．are noticed; plays; enjoys
D．is noticed; play; enjoying
