题目内容：

B. Choose the words or expressions and complete the passage (选择正确答案）

A few years ago, my two-year-old son pointing at a dozen of “stood” color marker-pens, cheered excitedly, “Mummy, look! I did it.” With the encouragement of such a ____, he quickly collected another handful of long and thin ball-pens, trying to do the same-making them stand up on the table. Little by little, his face _______— red and finally he cried out, “Mummy, help!”

____ all the ball-pens in his hand had either sharp or round ends, I said casually, “Mummy can’t help you on this.” But immediately he cried loudly and fell to the floor. A moment later, he ran back to the table, and_________ trying to keep the ball-pens standing up.

Without knowing why the ball-pens can; t stand up, my son had accepted the impossibility after many times of  ______tries. He put aside all the ball-pens, and kept only those marker-pens for this standing up “game”. This time he succeeded in this way. Clearly, he already learned to let go of this useless try.

Being persistent is not easy. But sometimes, it is even harder to let go. In our daily life, perhaps many headaches can be____ if we know how to realize those unlikely achievable goals, and then decisively let go of them immediately.

1.A.reply B.present C.photo D.success

2.A.turned B.guided C.held D.lifted

3.A.Knowing B.Noticing C.Believing D.Understanding

4.A.stopped B.continued C.enjoyed D.finished

5.A.failed B.passed C.wanted D.died

6.A.connected B.stopped C.started D.avoided