Cause的选择题The flu is believed _____ by viruses that like to r

Cause的选择题
The flu is believed _____ by viruses that like to reproduce in the cells inside the human nose and throat.
A、causing
B、being caused
C、to be caused
D、be have caused

dacaojingshe 1年前已收到4个回答举报

ganxl 幼苗

共回答了17个问题采纳率：100% 举报

C, 这是 sth is believed to be done 的句型,意思是“据信.”,而流感是被病毒引起的,所以是被动语态.

1年前

在冲撞中栖息幼苗

共回答了111个问题举报

1年前

磨豆豆幼苗

共回答了635个问题举报

C
一般陈述句：
人们相信，流感是由在人类鼻子跟嗓子细胞里繁殖的病菌引起的

1年前

ssx0058 幼苗

共回答了155个问题举报

首先流感是被病毒引起，所以cause 要用被动式。
另外的考点就是一类 sth be said / believed to 形式.。
综合考虑，选择c
要特别注意d 是主动的形式。不要被误导了

1年前

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