物流中心也被人们称作物流园区。

下图是噬菌体侵染细菌示意图，请回答下列问题：

(1)噬菌体侵染细菌的正确顺序应是________。

(2)图中D表明噬菌体侵染细菌时，留在细菌外的是________，注入细菌内的物质是_______。

(3)噬菌体侵染细菌实验得出了__________是主要遗传物质的结论。

报关员代表所属单位向海关办理报关业务时，只能担任其所属报关单位的报关工作。

肉瘿内治通常选用方剂是：（）

A.丹栀逍遥散

B.四海舒郁丸

C.海藻玉壶汤

D.牛蒡解肌汤

E.柴胡清肝饮

阅读下面的短文,然后按照要求写一篇150 词左右的英语短文.

      One day, Zeng's wife decided to go out for shopping, but her little son insisted on going with

her to the market. Thinking that she would come back very soon, and that the naughty boy would

bring her a lot of trouble, she was unwilling to do so.

     In order to persuade the boy to stay home, she told him, "Oh, come on, good boy, if you listen

to Mom and then Mom will give you a present when I am back."

     "What present are you going to give me, Mom?" asked the son.

     "We haven't eaten meat for a long time, so I will kill our pig and let you enjoy a big nice dinner."

The mother comforted the boy when it happened that their pig was wandering in front of the house.

Just at that time, her husband came back and heard what she saiD ．Thinking of the nice meal, the

boy gave in.

     Not very soon, the mother came back, but what she saw shocked her. It was her husband who

had killed the only pig of the poor family.

     "Why did you kill it? You know that it is very important for our family." she scolded him.

     "I did that just for your promise!" Mr. Zeng answereD ．

[ 写作内容]

1．以约30 个词概括这则中国寓言故事曾子的品质:

2 .  约120 个词,从"曾子"或者"曾子之妻"的行为任选一个角度发表你的看法，

并包括如下要点：

     ①你认为"曾子"或者"曾子之妻"的做法对孩子的教育会导致的结果是什么样的,并说出理由:

     ②  叙述你一次诚实守信的经历,并谈谈你的感受。

[ 写作要求]

1 ．可以使用实例来支持你的论点,也可以参照阅读材料的内容论述,但不得直接引

用原文中的句子；

2 ．标题自定。

当t-PSA在4.0～10.01μg/L时，f-PSA/t-PSA比值为可作为()，前列腺肥大和前列腺癌的鉴别点。

A．0.05

B．0.11

C．0.25

D．0.35

E．0.45