问题
多项选择题
下列关于尺寸基准选择的说法中（）是正确的。
A.以两个互相垂直的平面或直线为基准
B.以两条相互平行的中心线为基准
C.以一个平面和一条中心线为基准
D.每个方向至少选择一个基准
答案
参考答案：A, C, D
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下列关于尺寸基准选择的说法中（）是正确的。
A.以两个互相垂直的平面或直线为基准
B.以两条相互平行的中心线为基准
C.以一个平面和一条中心线为基准
D.每个方向至少选择一个基准
参考答案：A, C, D
完形填空（共20 小题，每小题1 分, 满分20分） Returning from a trip overseas, I sensed that something was wrong between Keith, one of my two sons, and me. So I asked him, “Keith, have I done anything that really 41 your feelings?” Immediately, he said, “Yes, last Christmas you promised us a special 42 that I really wanted but you 43 gave it to me.” The 44 was that I’d completely forgotten about it. I 45 , “Is there anything else I’ve done wrong, but I haven’t apologized 46 ?” Again, his 47 was immediate, “Remember last Christmas when Mom said you had to go to the 48 because Kate, my little sister, was going to be born? You left us at home and 49 in a hurry. Remember?” “Well, you left and forgot the suitcase.” I couldn’t believe he 50 all the details! “After you came back from the hospital you were 51 to see the suitcase had been opened and 52 had been thrown all over the place, and then you 53 me.” “And you didn’t do it?” I asked. “No, I didn’t. I was just searching for my gift.” My heart sank. I felt 54 . I hugged Keith and asked him to 55 me. His honesty made me think of my other son, Kevin. Maybe I’d hurt his feelings, too. I went to ask him the 56 question. Kevin answered as immediately as his 57 , “Last Christmas you promised us a special toy, but you forget about it.” 58 Christmas had passed, I took my two sons to the store that day and bought them what I had promised. The 59 thing wasn’t the toy. The problem was that I’d made a promise too 60 and didn’t keep it as their mother.
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