The new play _______ in theatre now . Why don't you go in and see it ?    [ ]

A. is being shown          

B. is showing    

C. is shown                  

D. shows

疟疾产生黑尿热常与患者缺乏下列哪种酶有关

A．丙酮酸激酶

B．葡萄糖-6-磷酸脱氢酶

C．磷酸果糖激酶

D．枸橼酸合成酶

E．葡萄糖醛酸转移酶