A.进行光合作用
B.躲避不良环境
C.进行呼吸作用
D.扩大分布范围
答案:D
These two areas are similar ________ they both have a high rainfall during this season.
A.to that
B.besides that
C.in that
D.except that
注射机的加料方式()
A、固定加料,前加料、后加料
B、固定加料,前加料、侧加料
C、固定加料,自动加料
D、固定加料,后加料、侧加