(IP 
  (NP-SBJ 
    (-NONE- *pro*))
                    
  (VP 
    (IP-ADV 
      (NP-SBJ 
        (-NONE- *PRO*))
                    
      (VP 
        (PP-ADV 
          (P 有如)
                    
          (NP 
            (CP 
              (WHNP-1 
                (-NONE- *OP*))
                    
              (CP 
                (IP 
                  (NP-SBJ 
                    (-NONE- *pro*))
                    
                  (VP 
                    (NP-TMP 
                      (NT 目前))
                    
                    (VP 
                      (VV 市售)
                    
                      (NP-OBJ 
                        (-NONE- *T*-1)))))
                    
                (DEC 的)))
                    
            (NP 
              (NN 验孕)
                    
              (NN 试剂))))
                    
        (VP 
          (VA 一样))))
                    
    (VP 
      (VA 方便))))
arg0: 
                    *pro* 
                
arg1: 
                    *T*-1 
                
argm: 
                    目前