药物代谢产物的极性一般比原药物 _________ ，且代谢后活性 ________

根据上下文，在空白处填正确的内容，使短文意思完整语句连贯。

      When you 1_________ (发信) or a postcard, you have to put stamps on the envelope or on the card.

When did people first begin to use stamps? Who was the first to 2_________ (想到) this idea? In the early

3_________(十九世纪), people didn't use stamps. They had to pay postage when they 4__________

(收到) it. Sometimes they didn't want to receive a letter 5__________ (根本不) but they had to pay money

for it. They were unhappy about this. The postage was high 6__________ (在那时), because the post

offices had to send many people to get the postage. Rowland Hill was a school teacher in England. He was

the first to think of using stamps in the 1850s. He thought it would be 7__________ (容易得多) for people

to use the stamps. They could to the post office to buy stamps and 8__________ (把它们贴在……上) the

envelops before they sent the letter. The post office could just put marks on the stamps 9__________ (以便)

people could not use the stamps again.10__________ (用这种方法) the post office did not need to send

postman to get postage. It only needed fewer postman to send letters.

1._______ 2._______ 3._______ 4._______ 5._______

6._______ 7._______ 8._______ 9._______ 10._______

设计与施工分离，建设单位项目目标的控制有困难，主要是不利于投资控制和（）。

A.质量控制

B.技术控制

C.进度控制

D.费用控制

请你协助小欣同学填写如下实验报告。

实验目的：探究铜绿的性质实验用品：（略）

实验过程及现象记录：

（1）观察铜绿的颜色和状态等物理性质：铜绿是___________色固体；

（2）将铜绿粉末用__________分别加到两支试管中；

（3）用__________向一支试管中逐滴滴加稀盐酸，观察到铜绿溶解，溶液呈___________色，同时有大量气泡产生；

（4）将另一支试管在酒精灯的外焰上加热（注意：加热时要先均匀加热后再集中加热），一段时间后，观察到绿色粉末逐渐变成__________色，试管口有水滴滴出。

结论：铜绿具有的化学性质是（Ⅰ）____________ ；（Ⅱ）_______________ 。

恶性纤维组织细胞瘤一般由________、________两者共同构成。

下列除哪项外，均为黄疸急黄证的主要症状（）

A.衄血便血，肌肤瘀斑

B.身目发黄，色晦暗无泽

C.舌质红绛，苔黄燥

D.壮热烦渴，神昏谵语