Question

17.Those people ____a general understanding of th

17.Those people ____a general understanding of the present situation .
A. lack of B. are lacking of C. lack D. are in lack
(答案选c，求逐个选项分析原因)

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Answer 1

lack单独用是动词, 表示缺乏, 可以及物也可以不及物例如:

a)及物:
He lacks courage.
他缺乏勇气。
Their actions lack consistency; they say one thing and do another.
"他们言行不一,说的是一回事,做的又是另一回事。"

b)不及物:
Something is lacking.
缺少点什么东西。
Is she lacking in courage?
她缺乏勇气吗?

lack后接of时是名词词性:

Owing to lack of time, we cannot do more than what we have done.
由于时间不够，我们只能做到这样。
There is no lack of vegetable.
蔬菜不缺。
The lack of rain aggravated the serious lack of food.
"由于干旱少雨,缺粮问题更加严重。"