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Careful testing is necessary before any more experiments can continue with the e
Careful testing is necessary before any more experiments can continue with the e
游客
2025-01-23
20
管理
问题
Careful testing is
necessary
before any more experiments can continue with the exploring submarine.
选项
A、needful
B、in need of
C、necessity
D、of necessity
答案
D
解析
近义词辨析necessary必要的,必需的,必然的;而A needful必要的,需要的;B in need of需要; C necessity必要性,需要,必需品;D of necessity必要性,需要,必需品;尽管几个词都有“必要”之意,但用法不同:be necessary是指某事(物)是必要的;needful主要指“必须的,需要的”,例:to do what is needful做必须做的事;有时它有necessary之意,如:needful expenditure必要的支出;in need of指某人或某事由于处在困境而需要帮助、建议、金钱等,例:This project is in urgent need of funding.这个项目急需资金;necessity是名词,表“必要性,必需品”,例:Water is a necessity of life.水是生命必不可少的(在此不定冠词a不能省略)。Food and clothing are necessities of life.食物和衣服都是生活的必需品。而be of necessity的作用即是necessary;类似的用法有很多,如:be of importance=be important;因此D为答案。
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