شرکت در آزمون آنلاین انگلیسی 3 - واژگان (Vocabulary) | آزمون شماره 11835

. Mom looked just as frightened as I felt, but I choose to remain ......................... and emotionless to help handle the situation 

A standard must not change. Most units are standard measures; in other …(A)…, they are exact copies of official measures which are carefully kept by the government. Probably the rulers we use are not perfect copies, …(B)… if you think carefully, you will …(C)…that no one can make a …(D)… copy of anything. But they must be as accurate as we can make them. They are …(E)… by the laws of each country. No person is allowed to use a yard measure or a meter which is different from the government standard.

Children often … at one another because they do not have the communication skills to solve disagreements appropriately.