tree，" he will think of two things："don't" and "fall off the tree". That is, he will automatically create the picture of falling off the tree in his mind.A child who is vividly imagining falling off the tree is much more likely to fall off.So it is far better to use "Hold on to the tree carefully."

　　Clear, positive instructions help kids to understand the right way to do things.Kids do not always know how to be safe, or how to react to the warning of the danger in negative words.So parents should make their commands positive."Sam, hold on firmly to the side of the boat" is much more useful than "Don't you dare to fall out of the boat？" or "How do you think I'll feel if you drown？" The changes are small but the difference is obvious.

　　Children learn how to guide and organize themselves from the way we guide them with our words, so it pays to be positive.

　　语篇解读：本文是一篇议论文。在对孩子做出命令和指示时，父母所用的正面或负面的表达方式会影响孩子的自信心。

　　4．Positive choice of words helps kids to ________.

　　A．do things carefully

　　B．learn in different situations

　　C．improve their imagination

　　D．build up their confidence

　　解析：选D　细节理解题。根据第一段的最后一句可知，父母用积极的表达方式更能够激发孩子们的自信心。故选D。

　　5．What can we infer from Paragraph 2?

　　A．One can't help imagining what is heard.

　　B．A child will act on what is instructed.

　　C．A child will fall off the tree when told not to.

　　D．One won't think of a blue monkey when given money.

　　解析：选A　推理判断题。根据第二段的第三句"For example, if someone offered you a million dollars not to think of a blue monkey for two minutes, you wouldn't be able to do it."及后面的两个例子可知，当被告知不要做某事时，脑海中却会情不自禁地浮现出做某事的样子，故选A。

　　6．Which of the following commands helps kids to be safe?

　　A．Fasten your seat belt.

　　B．Don't play by the lake.

C．How do you think I'll feel if you get hurt?