3.C
try a piece = try eating a piece.蘑菇的毒性是闻不出来的,故排除B项,另外可参见下文(这只狗吃了蘑菇)。
4.D
这位军官建议先让狗吃吃看,担心蘑菇会有毒,由此可见他很细心。
5.D
从下文 the officers then began to eat their meal 可知,这只狗enjoy (eating)his mushroom.
6.B
修饰名词taste的两个形容词之间存在转折关系,故应选but, besides是介词不能连接形容词。
7.A
An hour later = After an hour表示一个小时后。
8.C
警官们大为吃惊,因为园丁冲进来,很严肃很认真地说那条狗死了。
9.A
一听到狗死了,警官们立刻跳进车内,急驶向医院,C项表示没有思想就发生了,故应排除。
10.A
用洗胃器清除胃里的蘑菇,肯定是不好受的。Have a hard time (in) doing sth. = have difficulty (in) doing sth.。
11.D
remained in their stomachs = were left in their stomachs残留在胃里的蘑菇。
12.D
Return = go back表示从医院回到警察局。
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