完形填空
Louise was 72 years old and she lived by herself. The first thing she noticed when she came
downstairs that Sunday morning was that her 1 window was open. In fact, it was so wide open that
she had 2 closing it. Then she realized that things were not in their proper 3 . Finally, when she
found her empty 4 on the kitchen table, she realized the awful 5 . At first, she didn't know what to
do. Then she decided to 6 her son, Derek.
Derek's wife Sybil answered the phone, "It's your mother," she 7 him, coldly. Louise told Derek
about the open window, about things being in the wrong places and about the 8 missing from her
purse.
"All right," said Derek, "Don't 9 anything. I'll be 10 in half an hour."
Louise 11 and made herself a pot of tea and some toast. Then she went from room to room
wondering 12 anything else was missing.
When Derek arrived, he was content to 13 her looking so calm. "Have you rung the 14 ?" he
asked. "No? Then I'll do that straight away." So he rang the police.
As it was Sunday, 15 the only detectives were out. However, the police were polite, but vague
（含糊的）. "We'll send 16 round as soon as possible," they said.
Derek telephoned his wife. "I'm not sure when I'll be home, love," he told her. "I've got to 17 for
the police." While Derek and his mother waited, Derek 18 the catches（挂钩）on the windows and
locks on the doors. All of them were old and some of the catches hardly 19 at all. Derek felt 20 .
His mother was an old woman, after all. "I'll have to change all these," he told her.
a. 仓库关系的主键是 （37） ，该关系没有达到第三范式的原因是（38） ；b. 查询联想生产的激光打印机的总库存量的SQL语句如下：SELECT 商品名称，（39）FROM 商品，仓库WHERE （40）AND（41） ；c. 若仓库关系的地址不能为空，请将下述仓库关系SQL语句的空缺部分补充完整。CREATE TABLE 仓库（仓库号CHAR(2)，地址 CHAR(20)（42） ，电话 CHAR(20)，商品号 CHAR(5)，库存量NUMERIC(5)，（43） ，（44））；