One of the requirements for a fire is that the material ___to its burning temperature .
来源:百度知道 编辑:UC知道 时间:2024/05/22 07:47:03
A.were heated B.must be heated C.is heated D.be heated
选择哪个?理由?
选择哪个?理由?
D
require that +(should) do:要求……,其中should可以省略。
再加上被动语态,所以应该是be heated.
这句话的意思是:燃烧的一个要求是物质应该达到其着火点。
B.
材料必须加热到燃点.
要求性条件就要用必须.
B that后面引导的是宾语从句,在这个从句中the material与heat的关系是被动关系,所以用被动语态。根据句意应选B。着火的一个条件是燃烧物到达着火点。
one of the men.............
one of和the one of的区别
population of the earth____increasing fast.One third of the
"one of the least"是什么意思?
the head of one 的意思是
Conjure One Center Of the Sun 歌词
one of the twins ___ me
The game ___by them is one of the best ____in the middle of the party.
Of the two , the pink one is ( ).
he is one of the few who____ the plane crash