问题
判断题
无缝钢管、焊接钢管、镀锌钢管都属于有色金属钢管。
答案
参考答案：错
解析：无缝钢管、焊接钢管、镀锌钢管都属于碳钢管。
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无缝钢管、焊接钢管、镀锌钢管都属于有色金属钢管。
参考答案：错
解析：无缝钢管、焊接钢管、镀锌钢管都属于碳钢管。
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| It took Charlie several months to save up (积蓄) seven dollars. He wanted to 1 a model plane and went to the shop with the money. On the way, Charlie saw a little boy 2 on a corner of the street. 3 are you crying? Charlie asked. Those big boys took 4 my four dollars just now, the boy said, I was on 5 way to buy some exercise-books, but now I can't. Charlie thought of the 6 dollars in the pocket. He though of the model plane and the poor 7 . Charlie wanted to walk away, 8 he did not. At last he 9 four dollars to the boy and went home. Charlie 10 happy. Do you know why? He was happy because the little boy was happy. |
| ( )1．A．sell ( )2．A．cry ( )3．A．Why ( )4．A．out ( )5．A．my ( )6．A．there ( )7．A．some exercise-books C．three big boys ( )8．A．and ( )9．A．lent ( )10．A．becomes | B．buy B．to cry B．How B．off B．their B．seven B．though B．gave B．seemed | C．hold C．crying C．The reason C．up C．his C．four B．seven dollars D．littte boy C．but C．borrowed C．feels | D．bring D．cried D．for D．away D．a D．little D．so D．took D．felt |