发明规律这个词语搭配是否恰当?

Who invented(发明) the sandwich?
A.an Ametrican(美国人)
B.an Englishman
C.A Greek（希腊人）
D.A Russian(俄罗斯人 )
选几?
说出凭据.
这是我的寒假作业中的一题.

useful invention(发明) the computer is! A．What a B．What an C．How a D．How an

一,选词填空 .发现 发觉 发明
一,选词填空 .发现 发觉 发明 l,鲁班（ ）了锯.2,科学家（ ）了一种新的生物.3,我（ ）小星这两天不高兴,不知道出了什么事.

还有那些科学发明故事

英语单词填空
Nylon(尼龙) was invented(发明) in the early 1930s by an American chemist,Julian Hill.Other scientists(81)________(work) with him on his invention and finally on 27 October 1938,Nylon was introduced(介绍) to the world.It was cheap and strong and immediately(82)________(become) successful,especially in the making of women's stockings.During the Second World War,the best present for many women was a pair of nylon stockings,but more importantly,nylon(83)________(use) to make parachutes and tyres.Today,nylon (84)________(find) in many things:carpets,ropes,seat belts,furniture,computers,and even spare parts for the human body.It (85)________(play) an important part in our lives for over 50 years.

英语单词填空
Nylon(尼龙) was invented(发明) in the early 1930s by an American chemist,Julian Hill.Other scientists(81)________(work) with him on his invention and finally on 27 October 1938,Nylon was introduced(介绍) to the world.It was cheap and strong and immediately(82)________(become) successful,especially in the making of women's stockings.
　During the Second World War,the best present for many women was a pair of nylon stockings,but more importantly,nylon(83)________(use) to make parachutes and tyres.
　Today,nylon (84)________(find) in many things:carpets,ropes,seat belts,furniture,computers,and even spare parts for the human body.It (85)________(play) an important part in our lives for over 50 years.