1.改句子：Although long considered a vestigial organ that has no

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1.改句子：Although long considered a vestigial organ that has no function in humans,(the appendix,some scientists believe,may have) a significant role as part of the body's immune system.
正确答案是a,就是不改动
我选的是b：改成：the appendix,which,some scientists believe,may have
答案说b的话,句子就没动词,但which,some scientists believe,不是插入语吗?所以动词是may 反而a我觉得错是因为有2个动词啊：believe和may（some scientists believe不是插入语吧?）
2、语法改错：Some plants use chemical signals A.(that repel) insects,and B.(also ,these) signals help to put neighboring plants on alert C.(so they can) D.(mount their own defenses).E.(No error)
说also多余.这很无厘头啊觉得＝＝.不算多余吧?
c里so they can 的“they”没有指代不明的嫌疑吗?前面有signals和plants2个复数名词,所以they可以指代任何其一,所以犯了指代不明的错误吧?不对么?

第一题选A some scientists believe做一个插入成分,整句话相当于some scientists believe the appendix may have a significant role as part of the body's immune system.
如果用 the appendix,which,some scientists believe,may have的话
which指代appendix 作believe的宾语,那么believe appendix的语意搭配就不对了.
第二题and和also两个词都是表示并列的连接词,属于重复

5道状语从句题 1.Although he is considered a great writer,___are no It is a long lane that has no turning. It is a long lane that has no turning是什么意思 It's a long lane that has no turning. It is a long lane that has no turning.求中文翻译, 这是什么意思啊,It is a long line that has no turning,hope springs e It's a long lane that has no turning .为什么是有弯路呢?不是no turning it has a long time that 英语句子改被动It is considered that she is the most suitable person 几道英语改句子1.you'll find that what once seemed like a duty is no Although he is considered a great write,______. Although he is considered a great writer, ___ .