改错。

(       )1. What does Mr White go to work?                                  ____________

                A     B                   C        D 

(       )2. We go to school by bikes every day.                              ____________

                   A  B                 C           D

(       )3. — How long is it from here? 

                      A         B      C              

             — Two minutes' walk.                                                     ____________

                          D

(       )4. I'm going to walk the hotel and do some shopping           

                   A                   B                          C                             

              on the way.                                                                     ____________

                    D   

(       )5. He has to walk to the station every day, hasn't he?            ____________

                     A                   B              C              D

机场的选址应( )。

A．使跑道轴线方向最好与城市侧面平行或相切，且与城市主导风向一致

B．使跑道轴线方向最好与城市侧面平行或相切，且与城市主导风向垂直

C．使跑道轴线方向尽量避免穿过市区，且与城市主导风向垂直

D．使跑道轴线方向最好与城市侧面垂直，且与城市主导风向垂直