有雷达警报器的大车司机肆无忌惮超速,所以被禁用警报器。私车司机也用警报器,超速危险,所以小车司机也应被禁用警报器以减少危险。
看选项前,我心中认定正确答案应该是搭桥:私车司机也肆无忌惮超速。
结果发现五个选项都不沾边,排除法选的c
a 就算有关也是削弱
b 其他非雷达测速法对大小车作用一样,并且削弱措施有效性
d 削弱
e 雷达警报器不好用,不仅对雷达叫,对其他不测速的玩意也叫 (set off这里是启动的意思),所以反而可能让司机多减速了,削弱
* "namely" must be used either before a noun or before a noun phrase / clause.
you can't use it directly before an independent clause.
because of this principle, you can't say "namely they vary...". however, "namely that they vary..." and "namely considerable variation" are both fine.
this kills (a) and (e).
A选项:首先,由于本选项的dated是过去分词(不可能是过去时,因为date理应是被动语态,若是谓语动词的过去时应该用were dated),所以其引导的部分应该同found in Puerto Rico in 1991平行。鉴于此,and dated at 34 million years old身前和身后的逗号是不应该加的(只有三者平行或者两个完整的句子间的and前才应该加逗号)。
c:可以治,但是有副作用
e:治不了