某一酸碱指示剂的pKln＝3.4，它的变色范围应是A．2.4～3.4 B．2.4～4

One terribly cold day, a snowstorm hit our area. Needing firewood, I quickly set out with my best friend, Bruce, to look for a tree to cut down. Cutting down a tree in a snowstorm can be dangerous. (1) So to have a friend who could warn me of dangerso was important.

When I chose a big 23-meter-tall tree and prepared to cut it down, Bruce suddenly warned me, “Don’t cut down that tree! It’s too close to the power line!” I wasn’t sure about it. So I decided to disregard his warning. I couldn’t wait to finish the job and go back home. I began cutting down the tree. (2) When the tree fell, there was no longer any doubt whether my friend was right.

The tree caught the power line, bringing it to the ground. I considered cutting the tree off the line. After all, electricity can’t travel through wood. As I reached out my finger to touch the tree, pain ran up my arm and through my head. I had been shocked!

After I returned home and told my mother what happened, she quickly called the power company. Workers from the power company soon arrived. One of them asked if I had touched the tree, and when I told him I had, his face turned pale. “You should have been killed,” he said. It was my boots that saved my life.

(3)Within two hours, the workers removed the tree. Soon the snowstorm calmed down——but not my mother. Even though she was glad that I wasn’t hurt, my mother was still serious with me. After all（毕竟）, I shouldn’t have brushed off my friend’s warning.

小题1:将①处改成同义句。

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小题2:将②处翻译成汉语。

小题3:将③处用It takes sb. some time to do sth. 句型改为同义句。

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利润表中各项目一般应根据损益类账户的期末余额直接填列。( )

假如出口货物需要办理出口收汇核销，报关员应在申报时向海关提交( )。

A．出口货物报关单
B．出口付汇证明
C．出口收汇核销单
D．出口退税证明

肩关节脱位常见的血管损伤是（）。

A.肱动脉

B.腋动脉

C.旋肱前动脉

D.旋肱后动脉

E.肩胛下动脉

出铁次数通常按高炉（）及每次的最大出铁量不超过炉缸的安全容铁量来确定的。