人类的生产生活离不开金属材料，钢铁是重要的金属材料．

（1）下列图1中铁制品的用途中，利用金属导热性的是______（选填序号，下同）．

（2）目前世界上已有50%以上的废钢铁得到回收利用，其目的是______．

A．合理开采矿物B．防止钢铁生锈C．节约金属资源

  （3）为防止水龙头生锈，在其表面镀有一层耐腐蚀的铬．为防止钢铁制品锈蚀，还可以使用的方法有______（写出一种方法即可）．

（4）如图2为某化学兴趣小组同学设计的观察铁制品锈蚀的实验装置．请你分析以下相关叙述中，正确的是______．

A．一段时间后，铁丝会由下到上出现锈蚀现象

B．一段时间后，塑料瓶会变瘪，说明铁生锈与空气有关

C．一段时间后，水面处铁丝锈蚀严重，而水上、水下部分生锈不明显

（5）为了验证铝、铁、铜三种金属的活动性，茜茜同学把铝丝、铁丝、铜丝分别放入三支盛有同一种稀硫酸的试管中，实验结论是：金属活动性Al＞Fe＞H＞Cu．

请回答下列相关问题：

①铝与稀硫酸反应的化学方程式为：______；

②茜茜同学能从实验过程中发现铝比铁活泼的依据是______．

When anyone opens a current account at a bank, he is lending the bank money. He may (1) the repayment of the money at any time, either (2) cash or by drawing a check in favor of another person. (3) , the banker-customer relationship is that of debtor and creditor who is (4) depending on whether the customer’s account is (5) credit or is overdrawn. But, in (6) to that basically simple concept, the bank and its customer (7) a large number of obligations to one another. Many of these obligations can give (8) to problems and complications but a bank customer, unlike, say, a buyer of goods, cannot complain that the law is (9) against him.

The bank must (10) its customer’s instructions, and not those of anyone else. (11) , for example, a customer opens an account, he instructs the bank to debit his account only in (12) of checks drawn by himself. He gives the bank (13) of his signature, and there is a very firm rule that the bank has no right or (14) to pay out a customer’s money (15) a check on which its customer’s signature has been (16) It makes no difference that the forgery may have been a very (17) one: the bank must recognize its customer’s signature. For this reason there is no (18) to the customer in the practice, (19) by banks, of printing the customer’s name on his checks. If this (20) Forgery, it is the bank that will lose, not the customer. (254 words)

10（）

A.conform

B.comply

C.obey

D.abide