题目选项分析

比较两个句子语法结构语义，选出最佳答案：

Schistosomiasis, a disease caused by a parasitic worm, is prevalent in hot, humid climates, and it has become more widespread as irrigation projects have enlarged the habitat of the freshwater snails that are the parasite's hosts for part of its life cycle.

Schistosomiasis, a disease caused by a parasitic worm, is prevalent in hot, humid climates, and it has become more widespread as irrigation projects have enlarged the habitat of freshwater snails which become the parasite's hosts for part of its life cycles.

写下分析过程，便于复习“吃透”这个句子：

答对用户笔记

1人: VigourYao 2019-10-16 18:04:27

C:become强调的是变化的过程,前面一般应该给出导致变化的驱动因素！！！！这里没给所以这里使用are表示客观状态会更好！！！

1人: 不知其所以然 2018-02-21 15:52:28

its是单数，cycle不应该加s。
become改变句意，有了一层因果关系

0人: 学员Q9BsSG 2023-11-10 21:12:30

第二句which修饰蜗牛，后面的its指代不对

0人: 学习bot 2021-10-05 21:52:24

C：
1.become强调的是变化的过程,前面一般应该给出导致变化的驱动因素！！！！这里没给所以这里使用are表示客观状态会更好！！！
2.cycle应用单数

0人: 四战740 2020-12-04 19:50:36

1. which 引导non-essential modifier前面要有逗号

0人: 小雪要上700 2020-11-17 10:58:39

become是一个过程，而如果是are就是直接地的状态。

0人: 当你觉得自己落后才是真的落后 2019-12-03 21:37:32

its 对应只有一个cycle

0人: 大番茄红晃晃 2019-04-25 14:49:56

1) THE special kind of freshwater snails which are the parasite's host
2) it only has one life circle.

0人: Lisaaaaaaa 2018-10-25 07:43:22

become是瞬间动作。形容某种性质还是应该用is/are

0人: Vesperrrrrr 2018-09-04 15:48:12

are host和become host是不一样的，句意还是要根据题干决定

题目基本信息

所属科目：语法SC
题目来源1：OG18-语文分册-281
题目来源2：OG19-语文分册-281
题目来源3：OG20-语文分册-292

难度：难