1。The Iroquois were primarily planters,but supplementing their cultivation of maize,squash,and beans with fishing and hunting. (A)but supplementing (B)and have supplemented (C)and even though they supplemented (D)although they supplemented (E)but with supplementing 答案(d)这个没问题。 白勇解释为什么c不可以:因为主从句不能并列。 可是even though 是副词不是连词呀,and even though 可以这样用的。 只是因为they多余应该去掉。 2。In recent years cattle breeds have increasingly used crossbreeding,in part that their steers should acquire certain characteristics and partly because crossbreeding is said to provide hybrid vigor. (A)in part that their steers should acquire certain characteristics (B)in part for the acquisition of certain characteristics in their steers (C)partly because of their steers acquiring certain characteristics (D)partly because certain characteristics should be acquired by their steers (E)partly to acquire certain characteristicstheir in their steers 为什么to不定式可以跟because从句并列呢? |